Ezequiel Zaidenberg - Academia.edu (original) (raw)
Papers by Ezequiel Zaidenberg
Shoulder & Elbow, Nov 6, 2018
BackgroundTo evaluate the sustainability of the early clinical and radiological outcomes of terri... more BackgroundTo evaluate the sustainability of the early clinical and radiological outcomes of terrible triad injuries at long-term follow-up.MethodsTwelve consecutive patients who underwent fixation of terrible triad injuries with minimum of seven years of follow-up. Functional and radiological outcomes at one year and final follow-up were compared. We assessed Mayo Elbow Performance Score, Quick-Disability of the Arm Shoulder and Hand, and modified-American Shoulder and Elbow Surgeons Scores. Radiological evaluation included Broberg and Morrey classification and Hastings classification for heterotopic ossification.ResultsThe mean age of patients was 55 years, with a median follow-up of 9.3 years. At final evaluation, mean flexion, extension, supination, and pronation were 145°, 6°, 82°, and 80°, respectively; mean Mayo Elbow Performance Score, modified-American Shoulder and Elbow Surgeons Scores, and Quick-Disability of the Arm Shoulder and Hand scores were, respectively, 97, 92, and 4.9 points. There was no statistical difference between early and final follow-up range of motion, Mayo Elbow Performance Score, and Quick-Disability of the Arm Shoulder and Hand. However, radiological changes were observed in 66% of the patients at final follow-up. Two patients underwent reoperation, with final satisfactory results.ConclusionOur results suggested that using a standardized protocol, satisfactory clinical outcomes at early follow-up could be maintained over time. However, early complications and osteoarthritic changes at long-term follow-up can be expected.Level of evidenceTherapeutic IV Cases series.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Nov 18, 2020
Los métodos más utilizados para la artrodesis de la articulación interfalángica proximal y metaca... more Los métodos más utilizados para la artrodesis de la articulación interfalángica proximal y metacarpofalángica son la banda de tensión y el tornillo compresivo. El objetivo de este estudio fue comparar los resultados entre pacientes tratados con estas técnicas. materiales y métodos: Estudio comparativo retrospectivo de 10 años. Se incluyeron pacientes esqueléticamente maduros tratados por artrosis y artritis. Se analizaron la tasa de consolidación ósea, el tiempo hasta la consolidación, la incidencia de complicaciones y la tasa de reoperaciones. En un análisis secundario, se compararon los pacientes reumáticos y no reumáticos. Resultados: Se evaluaron 56 casos en 44 pacientes (edad promedio 53 años). Grupo 1: 35 casos tratados con banda de tensión y grupo 2: 21 tratados con tornillo compresivo. Había 32 casos reumáticos y 24 no reumáticos. El seguimiento promedio fue de 24 meses. La tasa promedio de consolidación fue del 94,2% en el grupo 1 y del 85,7% en el grupo 2. La incidencia de complicaciones fue del 11,4% en el primer grupo y 23,8% en el segundo, y la tasa de reoperaciones, del 17,1% y del 0%, respectivamente. Conclusiones: Ambos métodos permiten lograr tasas altas de consolidación, pero la incidencia de seudoartrosis fue casi tres veces superior con el tornillo compresivo que con la banda de tensión. La tasa más alta de reoperaciones en el grupo con banda de tensión fue por extracción del material. El tiempo de consolidación fue más corto en los pacientes no reumáticos, independientemente de la técnica. Palabras clave: Artrodesis; fusión interfalángica proximal y metacarpofalángica; banda de tensión; tornillo compresivo. nivel de evidencia: III Comparative study between tension band and compression screw fixation in metacarpophalangeal and proximal interphalangeal joint arthrodesis AbstRACt Introduction: Tension band wiring (TBW) and compression screw fixation are the most common methods used for proximal interphalangeal (PIP) and metacarpophalangeal (MCP) joint arthrodesis. The aim of this study was to compare outcomes between patients treated with those methods. materials and methods: A 10-year retrospective comparative study. The study population included skeletally mature patients treated for osteoarthritis or arthritis. Union rates, healing times, complications, and reoperation rates were compared between TBW and compression screw fixation methods. Outcomes were also studied in terms of rheumatic and nonrheumatic patients. Results: The study sample consisted of 56 cases and 44 patients (average age, 53 years). Group 1: 35 patients treated with TBW. Group 2: 21 patients treated with compression screw fixation. There were 32 rheumatic cases and 24 nonrheumatic cases. The average follow-up was 24 months. Union rates were 94.2% (Group 1) and 85.7% (Group 2). Complication rates were 11.4% (Group 1) and 23.8% (Group 2). Reoperation rates were 17.1% (Group 1) and 0% (Group 2). Conclusions: Both methods have high union rates; however, the nonunion incidence in the compression screw group was almost three times higher than in the TBW group. The reoperation rate was higher in the TBW group, mostly due to hardware removal. Healing time was shorter in non-rheumatic patients regardless of the method.
![Research paper thumbnail of Bloqueo óseo metafisario de radio y fijación estable en seudoartrosis de polo proximal de escafoides sin necrosis. [Radial metaphyseal core decompression and stable fixation of proximal pole scaphoid nonunion without osteonecrosis ]](https://attachments.academia-assets.com/107441472/thumbnails/1.jpg)
](Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 20, 2019
Objective: To report the consolidation rate and the outcomes of a series of 22 patients with prox... more Objective: To report the consolidation rate and the outcomes of a series of 22 patients with proximal pole scaphoid nonunion treated with a metaphyseal core decompression and an anterograde self-compressing screw. methods: We present a prospective series of patients with proximal pole scaphoid nonunion and confirmation of intraoperative bleeding in both fragments. Patients presented with displacement, degenerative changes, proximal pole fragmentation, cavitation at the fracture site, reduced bone length, and necrosis, as well as those with carpal instability, were excluded. X-rays and computed tomography scans were performed to assess consolidation; range of motion and grip strength were recorded, and patients completed a visual analogue scale for pain at rest, pain during activity, and subjective functional status, as well as a DASH (Disabilities of the Arm, Shoulder and Hand) questionnaire. Results: Eighteen patients were included. Union was observed in 17 patients. The average follow-up time was 22 months and the average final range of motion was as follows: 87% for flexion, 84% for extension, 78% for radial deviation, 84% for ulnar deviation, and 85% for grip strength. The average score on the visual analogue scale was 0 point for pain at rest, 2 for pain during activity, and 9 for function, while average DASH score was 8. Conclusions: Using this simple and reliable technique, we obtained 95% union and very good functional results. Metaphyseal core decompression with an antegrade screw is a valid and effective alternative for the treatment of proximal pole scaphoid nonunion in carefully selected patients.
Orthopaedics & traumatology: surgery & research, Sep 1, 2021
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
International Journal of Surgery Case Reports, 2015
BACKGROUND: Scapulo-thoracic joint disorders, including bursitis and crepitus, are commonly misdi... more BACKGROUND: Scapulo-thoracic joint disorders, including bursitis and crepitus, are commonly misdiagnosed problems and can be a source of persistent pain and dysfunction PRESENTATION OF THE CASE: This article describes an unusual case of a snapping scapula syndrome secondary to a migration through the lateral cortex of a rib splint intramedullary fixation device into the scapulothoracic joint. DISCUSSION: Recently, the operative fixation of multiple ribs fractures with intramedullary fixation devices has become popular. Despite the good outcomes with new rib splint designs, concern remains about the potential complications related to potential loss of fracture reduction with migration of the wire resulting in pain or additional injury to the surrounding tissues. CONCLUSION: Surgeons should pay attention to any protrusion of intramedullary rib implants, especially in the evaluation of routine X-rays following surgical treatment. We should be aware of the possibility of this rare cause of snapping scapula syndrome to avoid delayed diagnosis and consider removing the implant will resolve the pain.
The Journal of Hand Surgery, Sep 1, 2017
Grant received from: Arthrex (2016) COI: There is no financial information to disclose. Hypothesi... more Grant received from: Arthrex (2016) COI: There is no financial information to disclose. Hypothesis: We hypothesized that the arthroscopic hook test would be accurate and reliable diagnostic test for foveal triangular fibrocartilage complex (TFCC) detachment. Methods: Wrist arthroscopy was performed on 14 cadaveric upper extremities amputated at the mid-humerus level. Arthroscopic hook and trampoline tests were performed, graded as either positive or negative, and arthroscopic videos recorded ("baseline" condition). The Revision of Aptis Components
Revue de Chirurgie Orthopédique et Traumatologique, Sep 1, 2021
![Research paper thumbnail of Resultados clínico-radiológicos en pacientes jóvenes con fractura articular completa de radio distal tratados con placa palmar bloqueada. [Clinical and Radiological Results in Young Patients with Complete Articular Distal Radius Fractures Treated with Volar Locked Plate.]](https://attachments.academia-assets.com/107441493/thumbnails/1.jpg)
](Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 19, 2016
Introducción: Las fracturas articulares completas de radio distal (tipo AO C) en jóvenes represen... more Introducción: Las fracturas articulares completas de radio distal (tipo AO C) en jóvenes representan un desafío por la demanda funcional de este subgrupo y la necesidad de una reducción articular para evitar la artrosis postraumática. El objetivo es evaluar los resultados clínicos y radiológicos de pacientes <65 años con fracturas de radio distal de tipo C tratadas mediante placa palmar bloqueada. Materiales y Métodos: Se analizaron 292 pacientes con fracturas de radio distal, 71 cumplieron los criterios de inclusión. Cuarenta y cinco eran mujeres (media de la edad 51 años; rango 20-64). El seguimiento promedio fue de 28 meses (rango 6-71). Se realizó una evaluación clínica objetiva (rango de movilidad) y subjetiva de la función (Quick DASH y escala analógica visual funcional) y del dolor (escala analógica visual en reposo y escala de Swanson), además de una valoración radiológica. Resultados: El Quick DASH promedio fue de 8,7 (rango 0-60), con un puntaje en la escala analógica visual funcional de 8,9 (rango 3-10). La movilidad final promedio y comparativa con el lado sano fue: flexo-extensión 91%, pronosupinación 97%, desviaciones cubital-radial 90%. Respecto del dolor, el puntaje promedio en la escala analógica visual fue de 0,4 (rango 0-10). Siempre se recuperaron los parámetros radiológicos extrarticulares, con corrección de 26 de los 29 escalones articulares preoperatorios. Conclusión: En pacientes jóvenes, el tratamiento de las fracturas de radio distal de tipo C con placa palmar bloqueada logra resultados clínicos y radiológicos favorables con corrección de la mayoría de los escalones articulares. Palabras clave: Fractura articular; radio distal; placa palmar bloqueada; joven. Nivel de Evidencia: IV Clinical and radiological results in young patients with complete articular distal radius fractures treated with volar locked plate
![Research paper thumbnail of Descompresión ósea metafisaria del radio distal para estadios tempranos de la enfermedad de Kienböck. Seguimiento mínimo de 10 años. [Metaphyseal bone decompression of distal radius for early stages of Kienböck's disease. Minimum follow-up of 10 years.]](https://attachments.academia-assets.com/107441492/thumbnails/1.jpg)
](Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 15, 2018
Introducción: El objetivo de este estudio es analizar los resultados clínicos y radiológicos a la... more Introducción: El objetivo de este estudio es analizar los resultados clínicos y radiológicos a largo plazo de una serie de pacientes con enfermedad de Kienböck en estadios II y IIIA de la clasificación de Lichtman, tratados mediante descompresión metafisaria del radio distal. Materiales y Métodos: Estudio retrospectivo y descriptivo que incluyó a 23 pacientes con enfermedad de Kienböck (estadios II y IIIA de Lichtman) tratados mediante descompresión metafisaria del radio distal con, al menos, 10 años de seguimiento. Al final del seguimiento,
Hand, Jul 7, 2016
Background:The purpose of this study was to evaluate the rate of patency after delayed repair of ... more Background:The purpose of this study was to evaluate the rate of patency after delayed repair of the ulnar artery following primary ligation. Methods: Adult patients with primary ligation of the injured ulnar artery at the forearm who had a delayed repair of the artery were included. Postoperative arterial patency was determined by either physical examination or color Doppler ultrasonographic imaging. Postoperative complications and Disabilities of the Arm, Shoulder and Hand score were recorded. Results: Eight consecutive patients during a 3-year period were included. The mean age was 35 years. Four cases were women. The surgery was performed at a mean of 5 days after the injury and ligation. At a mean follow-up of 22 months, 7 patients had a patent artery. One patient suffered a hematoma. Conclusions: A high rate of patency can be obtained after delayed repair of the ulnar artery at the forearm.
The Journal of Hand Surgery, Sep 1, 2017
Purpose This study was designed to analyze the long-term clinical and radiological outcomes of a ... more Purpose This study was designed to analyze the long-term clinical and radiological outcomes of a series of patients with Kienböck disease stage IIIA treated with radius core decompression. Methods This retrospective study included 15 patients with Kienböck disease (Lichtman stage IIIA) who underwent distal radius metaphyseal core decompression between 1998 and 2005 and who were followed-up for at least 10 years. At the last follow-up, the patients were evaluated for wrist range of motion and grip strength. The overall results were evaluated by the modified Mayo wrist score and visual analog scale pain score. We also compared the radiological changes between the preoperative and the final follow-up in their Lichtman classification and the modified carpal height ratio. Results The mean follow-up period was 13 years (range, 10e18 years). Based on the modified Mayo wrist score, clinical results were excellent in 6 patients, good in 8 patients, and poor in 1 patient who required a proximal row carpectomy as revision surgery. The mean preoperative pain according to the visual analog scale was 7 (range, 6e10) and was 1.2 (range, 0e6) at the final follow-up. Compared with the opposite side, the average flexion/extension arc was 77% and the grip strength was 80%. All patients, except 1, returned to their original employment. At the final follow-up, 3 patients had decreased modified carpal height ratio, 12 remained unchanged. Radiographic disease progression according to the Lichtman classification to stages IIIB to IV occurred in only 2 wrists. There were no complications related to the core decompression. Conclusions In this limited series, the radius core decompression demonstrated favorable longterm results and could be considered as a surgical alternative for stage IIIA of Kienböck disease.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Apr 14, 2021
Comunicar los resultados en pacientes con un proceso infeccioso del codo, tratados en 2 etapas qu... more Comunicar los resultados en pacientes con un proceso infeccioso del codo, tratados en 2 etapas quirúrgicas: la primera con un espaciador de cemento con antibiótico y la segunda con una artroplastia total de codo. materiales y métodos: Se describen los criterios de inclusión, el diagnóstico de infección y las 2 etapas quirúrgicas. Resultados: Se incluyeron 10 pacientes (4 hombres y 6 mujeres, edad promedio 62 años). Causas iniciales: degenerativas (2 casos) y traumáticas (8 casos). Se realizaron 4 aloprótesis y 2 colgajos de dorsal ancho. Se identificaron 2 grupos: A (defectos óseos <4 cm) y B (>4 cm). El seguimiento fue de 5 años. La flexo-extensión fue de 117°/29° en el preoperatorio y 130°/29° en el posoperatorio; los puntajes de dolor fueron 6,5 y 2,5 (EAV); 40 y 80 (MEPS); y 56 y 30 (DASH), respectivamente. La fuerza de extensión fue de M5 (4 casos), M4 (2 casos), M3 (1 caso), M1 (2 casos) y M0 (1 caso). Un paciente tuvo una necrosis del colgajo que evolucionó con infección y 9 no tenían infección al final del seguimiento. Los pacientes del grupo A tenían menos cirugías previas y mejores resultados funcionales. Conclusiones: El tratamiento de un proceso infeccioso de codo mediante un espaciador de cemento con antibiótico permite controlar la infección en un alto porcentaje de los casos. La reconstrucción protésica secundaria es demandante y se asocia a complicaciones. Cabe esperar que, cuanto más grande sea el defecto óseo y mayor la cantidad de procedimientos previos, los resultados funcionales sean peores. Palabras clave: Artroplastia de codo; prótesis de codo; infección; osteomielitis; espaciador de cemento. nivel de evidencia: IV Total elbow Arthroplasty After an Infectious Process. Two-stage surgery AbsTRACT Objective: To report the results of patients with an infectious elbow process, treated in 2 surgical stages: the first with an antibiotic cement spacer (ACS) and the second with a total elbow arthroplasty. materials and methods: The inclusion criteria, the diagnosis of infection and the 2 surgical stages are described. Results: 10 patients were included (7 men and 3 women), average age: 62 years old. Initial causes: degenerative in 2 cases and traumatic in 8. 4 alloprostheses and 2 latissimus dorsi flaps were performed. Follow-up was 5 years. Flexo-extension was 117°/29° in preoperative and 130°/29° in postoperative; pain according to VAS: 6.5 and 2.5; MEPS: 40 and 80; DASH 56 and 30 respectively. The extension strength was M5 (4 cases), M4 (2), M3 (1), M1 (2) and M0 (1). One patient presented a necrosis of the flap that evolved with infection. In 9 of the 10 cases the patients were free of infection at the end of the follow-up. Two groups of patients were identified: Group A (bone defects less than 4 cm) and B (more than 4 cm). Group A patients had fewer previous surgeries and better functional outcomes. Conclusion: The treatment of an infectious elbow process through the placement of antibiotic cement spacer, allows a control of the infection in a high percentage of cases. Secondary prosthetic reconstruction is demanding and associated with complications. It is to be expected that the greater the bone defect and the greater the number of previous procedures, the worse the functional results.
![Research paper thumbnail of Doble compresión del nervio mediano en el brazo. Revisión crítica de la bibliografía. [Double compression syndrome of the median nerve in the arm]](https://attachments.academia-assets.com/107441474/thumbnails/1.jpg)
](Revista de la Asociación Argentina de Ortopedia y Traumatologia, Nov 12, 2019
Resumen La compresión mecánica de un nervio periférico en dos sitios diferentes a lo largo de su ... more Resumen La compresión mecánica de un nervio periférico en dos sitios diferentes a lo largo de su trayecto se define como síndrome de doble compresión. Esta enfermedad se basa en la teoría de la mayor susceptibilidad que tendría un nervio a nivel distal cuando este también se encuentra comprimido, en forma asintomática, a nivel proximal, debido a una alteración en el flujo axonal. Si bien la descompresión del túnel carpiano es una cirugía con resultados previsibles, hay pacientes operados por síndrome del túnel carpiano que no mejoran después de una cirugía, como cabría esperar. Si se excluye de este análisis a las comorbilidades, como diabetes, casos avanzados con atrofia muscular o descompresiones insuficientes, muchos de estos fracasos terapéuticos podrían estar fundamentados por el escaso diagnóstico de un segundo sitio de compresión concomitante. No obstante, existe gran controversia alrededor del síndrome de doble compresión que involucra no solo a su existencia, sino también a su incidencia y fisiopatología. El objetivo de esta publicación es presentar una revisión bibliográfica crítica del síndrome de doble compresión centrada en el compromiso del nervio mediano tanto en la muñeca como en el codo. Palabras clave: Túnel carpiano; nervio mediano; síndrome del pronador redondo.
The journal of hand surgery, Jan 14, 2022
Background: Core decompression of the distal radius is a minimally invasive technique that has de... more Background: Core decompression of the distal radius is a minimally invasive technique that has demonstrated good clinical outcomes in the treatment of Kienböck disease. However, the effectiveness of core decompression has not been compared in different age groups. The aim of this study is to compare the outcomes of core decompression in patients <45 years of age to those ≥45 years of age. Methods: This retrospective study included 36 patients with Kienböck disease who were treated with core decompression over a 20-year period. The mean follow-up was 7 years. Outcome measures included visual analogue scale pain score (VAS), active range of flexion/extension at the wrist, grip strength, and modified Mayo wrist score. The patients were divided into two age groups namely <45 years (younger group; n = 22) and ≥45 years (older group; n = 12) and the outcome measures were compared between the two age groups. Results: There were no statistically significant differences between the outcomes of the two age groups. Conclusion: The outcomes of core decompression of the distal radius for Kienböck disease in older patients (≥45 years) are favorable and similar to those seen in younger patients (<45 years). Level of Evidence: Level III (Therapeutic)
European Journal of Orthopaedic Surgery and Traumatology, Mar 29, 2021
Purpose The objective of this study is to evaluate the effect of absolute stability (AS) versus r... more Purpose The objective of this study is to evaluate the effect of absolute stability (AS) versus relative stability (RS) performed through a minimally invasive plate osteosynthesis (MIPO) in AO/OTA 12A1 and 12A2 fractures on healing and the time to radiographic union. Methods This was a retrospective cohort study of all patients treated with plate fixation for AO/OTA type 12A1–A2 fractures at a single institution. Patients were grouped according to the type of stability used in their surgery. Time until radiographic union was estimated using the Kaplan–Meier method, which was compared by long-rank test between both types of surgical techniques. Results A total of 70 patients were included in this study with 35 patients in each group. The median follow-up was 9 (IQR 6–14) months. The median time to radiographic union was significantly lower in the AS group than in the RS group: 12 (interquartile range (IQR) 10–14) weeks versus 18 (IQR 16–19) weeks, respectively ( p < 0.001). Non-union was seen in two cases (7%) in the relative stability group. Three patients in the RS group developed a post-operative radial nerve palsy. Conclusion The main finding of this study is that the median time to radiographic union was significantly shorter in the patients treated with AS compared to those with a RS technique. These findings support the recommendations of the AO foundation in that simple metaphyseal fractures (type A) that require surgical treatment should be treated with an AS construct. RS techniques should be reserved to multifragmentary fractures where fragment preservation of blood supply is paramount.
The journal of hand surgery, Nov 9, 2021
Background: Volar locking plates have provided the capability to repair both simple and complex f... more Background: Volar locking plates have provided the capability to repair both simple and complex fractures. However, complications related to the inability to fix or to maintain the fixation of some fracture patterns have been reported with volar locking plates. The purpose of this study was to evaluate the results of dorsal plating treatment for specific pattern of fractures. Methods: Patients with distal radius fractures were retrospectively evaluated. Inclusion criteria for this study were those related to the patient and treatment (adult patients, internal fixation with dorsal plating, a minimum follow-up of 12 months), and those related to the fracture pattern (displaced central articular fragment, volar distal fracture line not enough to allow volar fixation, displaced dorsal-ulnar fragment, dorsal partial fractures, combination of these patterns). Clinical outcome information including active range of motion, radiographs, PRWE and DASH questionnaires were collected. Complications were recorded. Results: During a 6-year period, 679 distal radius fractures were treated with open reduction and internal fixation. Of these, 27 patients fulfilled the inclusion criteria. Patients were examined at a median of 34 months’ follow-up. All but pronation, supination, and radial deviation had a statistically significant difference compared to the opposite side. The median score on the DASH was 4.5 and 3.2 on the PRWE. No patient suffered loss of reduction during the follow-up nor were tendon ruptures recorded. Conclusions: Although most of the distal radius fractures can be treated with volar locking plates, almost 5% of them present specific patterns that are amenable to treatment with dorsal fixation, without postoperative loss of reduction. These specific patterns are: (1) displaced central articular fragment, (2) volar distal fracture with less of 1cm distance from the distal volar edge of the radius, (3) displaced dorso-ulnar fragment, (4) Barton’s fracture, (5) combination of these patterns.
Case reports in orthopedics, 2015
The unilateral rupture of the triceps brachii tendon is a rare lesion representing 1% of all tend... more The unilateral rupture of the triceps brachii tendon is a rare lesion representing 1% of all tendon injuries. The most common causes are the result of a contraction against resistance (especially weightlifters) and direct trauma. It has also been associated with systemic diseases such as diabetes mellitus, chronic renal failure, secondary hyperparathyroidism, and use of systemic corticosteroids. Simultaneous bilateral rupture of the triceps tendons is less frequent and has been described in association with chronic metabolic disorders, especially in those patients on hemodialysis. This paper presents a case of bilateral triceps tendon rupture of a 36-yearold woman with renal transplantation secondary to chronic renal failure. Early surgical repair was performed using a bone tunnel technique with a nonabsorbable suture. Clinically active extension with 135 degrees of range of motion was achieved.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
The integrity of the extensor apparatus is essential for the correct functioning of an elbow pros... more The integrity of the extensor apparatus is essential for the correct functioning of an elbow prosthesis. Triceps deficiency has been considered a relative contraindication for arthroplasty, because it produces a flexion contracture and an active extension deficit. These limitations can significantly affect the functional improvement that total elbow arthroplasty produces. Faced with an olecranon nonunion, the placement of a total elbow prosthesis is presented as a complex problem to be solved. The objective of this article is to describe the surgical technique for the placement of a total elbow prosthesis in the context of an olecranon nonunion, and to report three cases.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
Objetivo: Comunicar los resultados de una serie de adultos con consolidaciones en valgo del codo ... more Objetivo: Comunicar los resultados de una serie de adultos con consolidaciones en valgo del codo tratados con una osteotomía en cuña sustractiva monoplanar. Materiales y Métodos: Se incluyeron 5 pacientes. Se describe la técnica quirúrgica que consistió en un abordaje posterior paratricipital, resección en cuña sustractiva y transposición anterior del nervio cubital. El seguimiento promedio fue de 17 meses. Resultados: Se trató a 4 hombres y una mujer, con una edad promedio de 27 años. La movilidad preoperatoria promedio fue de 138º-7° y la posoperatoria, de 138-6°, el puntaje de dolor en la EAV fue de 4 y 1, el MEPS de 71 y 97, y el DASH de 26 y 8, respectivamente. La evaluación radiográfica preoperatoria arrojó un valgo promedio de 30º con un valgo contralateral de 11º. La corrección radiográfica demostró un valgo de 13º. Se obtuvo una corrección promedio de 2° menos que del otro lado. Todas las osteotomías consolidaron, y la medición de la prominencia medial fue, en promedio, un ...
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
Introducción: El objetivo de esta serie de casos es describir los resultados y las complicaciones... more Introducción: El objetivo de esta serie de casos es describir los resultados y las complicaciones de pacientes con heridas graves con defecto de cobertura en zonas críticas tratadas con una matriz dérmica acelular. Materiales y Métodos: Se realizó una revisión retrospectiva de los pacientes con déficit de cobertura en zonas críticas tratados con matriz dérmica acelular en nuestro centro. Definimos como zona crítica al déficit de cobertura que no pueda ser tratado solo con injerto de piel. Evaluamos variables preoperatorias, intraoperatorias y posoperatorias. Resultados: Los diagnósticos iniciales fueron tumor (3 pacientes), trauma agudo (3 pacientes) y secuela de síndrome compartimental (2 pacientes). El defecto de cobertura estaba localizado en la pierna (3 casos), en la mano (2 casos), en el muslo (1 caso), en el antebrazo (1 caso) y en el pie (1 caso). La zona crítica se caracterizó por exposición tendinosa con pérdida de peritenon (5 casos), exposición ósea y pérdida de periosti...
Shoulder & Elbow, Nov 6, 2018
BackgroundTo evaluate the sustainability of the early clinical and radiological outcomes of terri... more BackgroundTo evaluate the sustainability of the early clinical and radiological outcomes of terrible triad injuries at long-term follow-up.MethodsTwelve consecutive patients who underwent fixation of terrible triad injuries with minimum of seven years of follow-up. Functional and radiological outcomes at one year and final follow-up were compared. We assessed Mayo Elbow Performance Score, Quick-Disability of the Arm Shoulder and Hand, and modified-American Shoulder and Elbow Surgeons Scores. Radiological evaluation included Broberg and Morrey classification and Hastings classification for heterotopic ossification.ResultsThe mean age of patients was 55 years, with a median follow-up of 9.3 years. At final evaluation, mean flexion, extension, supination, and pronation were 145°, 6°, 82°, and 80°, respectively; mean Mayo Elbow Performance Score, modified-American Shoulder and Elbow Surgeons Scores, and Quick-Disability of the Arm Shoulder and Hand scores were, respectively, 97, 92, and 4.9 points. There was no statistical difference between early and final follow-up range of motion, Mayo Elbow Performance Score, and Quick-Disability of the Arm Shoulder and Hand. However, radiological changes were observed in 66% of the patients at final follow-up. Two patients underwent reoperation, with final satisfactory results.ConclusionOur results suggested that using a standardized protocol, satisfactory clinical outcomes at early follow-up could be maintained over time. However, early complications and osteoarthritic changes at long-term follow-up can be expected.Level of evidenceTherapeutic IV Cases series.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Nov 18, 2020
Los métodos más utilizados para la artrodesis de la articulación interfalángica proximal y metaca... more Los métodos más utilizados para la artrodesis de la articulación interfalángica proximal y metacarpofalángica son la banda de tensión y el tornillo compresivo. El objetivo de este estudio fue comparar los resultados entre pacientes tratados con estas técnicas. materiales y métodos: Estudio comparativo retrospectivo de 10 años. Se incluyeron pacientes esqueléticamente maduros tratados por artrosis y artritis. Se analizaron la tasa de consolidación ósea, el tiempo hasta la consolidación, la incidencia de complicaciones y la tasa de reoperaciones. En un análisis secundario, se compararon los pacientes reumáticos y no reumáticos. Resultados: Se evaluaron 56 casos en 44 pacientes (edad promedio 53 años). Grupo 1: 35 casos tratados con banda de tensión y grupo 2: 21 tratados con tornillo compresivo. Había 32 casos reumáticos y 24 no reumáticos. El seguimiento promedio fue de 24 meses. La tasa promedio de consolidación fue del 94,2% en el grupo 1 y del 85,7% en el grupo 2. La incidencia de complicaciones fue del 11,4% en el primer grupo y 23,8% en el segundo, y la tasa de reoperaciones, del 17,1% y del 0%, respectivamente. Conclusiones: Ambos métodos permiten lograr tasas altas de consolidación, pero la incidencia de seudoartrosis fue casi tres veces superior con el tornillo compresivo que con la banda de tensión. La tasa más alta de reoperaciones en el grupo con banda de tensión fue por extracción del material. El tiempo de consolidación fue más corto en los pacientes no reumáticos, independientemente de la técnica. Palabras clave: Artrodesis; fusión interfalángica proximal y metacarpofalángica; banda de tensión; tornillo compresivo. nivel de evidencia: III Comparative study between tension band and compression screw fixation in metacarpophalangeal and proximal interphalangeal joint arthrodesis AbstRACt Introduction: Tension band wiring (TBW) and compression screw fixation are the most common methods used for proximal interphalangeal (PIP) and metacarpophalangeal (MCP) joint arthrodesis. The aim of this study was to compare outcomes between patients treated with those methods. materials and methods: A 10-year retrospective comparative study. The study population included skeletally mature patients treated for osteoarthritis or arthritis. Union rates, healing times, complications, and reoperation rates were compared between TBW and compression screw fixation methods. Outcomes were also studied in terms of rheumatic and nonrheumatic patients. Results: The study sample consisted of 56 cases and 44 patients (average age, 53 years). Group 1: 35 patients treated with TBW. Group 2: 21 patients treated with compression screw fixation. There were 32 rheumatic cases and 24 nonrheumatic cases. The average follow-up was 24 months. Union rates were 94.2% (Group 1) and 85.7% (Group 2). Complication rates were 11.4% (Group 1) and 23.8% (Group 2). Reoperation rates were 17.1% (Group 1) and 0% (Group 2). Conclusions: Both methods have high union rates; however, the nonunion incidence in the compression screw group was almost three times higher than in the TBW group. The reoperation rate was higher in the TBW group, mostly due to hardware removal. Healing time was shorter in non-rheumatic patients regardless of the method.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 20, 2019
Objective: To report the consolidation rate and the outcomes of a series of 22 patients with prox... more Objective: To report the consolidation rate and the outcomes of a series of 22 patients with proximal pole scaphoid nonunion treated with a metaphyseal core decompression and an anterograde self-compressing screw. methods: We present a prospective series of patients with proximal pole scaphoid nonunion and confirmation of intraoperative bleeding in both fragments. Patients presented with displacement, degenerative changes, proximal pole fragmentation, cavitation at the fracture site, reduced bone length, and necrosis, as well as those with carpal instability, were excluded. X-rays and computed tomography scans were performed to assess consolidation; range of motion and grip strength were recorded, and patients completed a visual analogue scale for pain at rest, pain during activity, and subjective functional status, as well as a DASH (Disabilities of the Arm, Shoulder and Hand) questionnaire. Results: Eighteen patients were included. Union was observed in 17 patients. The average follow-up time was 22 months and the average final range of motion was as follows: 87% for flexion, 84% for extension, 78% for radial deviation, 84% for ulnar deviation, and 85% for grip strength. The average score on the visual analogue scale was 0 point for pain at rest, 2 for pain during activity, and 9 for function, while average DASH score was 8. Conclusions: Using this simple and reliable technique, we obtained 95% union and very good functional results. Metaphyseal core decompression with an antegrade screw is a valid and effective alternative for the treatment of proximal pole scaphoid nonunion in carefully selected patients.
Orthopaedics & traumatology: surgery & research, Sep 1, 2021
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
International Journal of Surgery Case Reports, 2015
BACKGROUND: Scapulo-thoracic joint disorders, including bursitis and crepitus, are commonly misdi... more BACKGROUND: Scapulo-thoracic joint disorders, including bursitis and crepitus, are commonly misdiagnosed problems and can be a source of persistent pain and dysfunction PRESENTATION OF THE CASE: This article describes an unusual case of a snapping scapula syndrome secondary to a migration through the lateral cortex of a rib splint intramedullary fixation device into the scapulothoracic joint. DISCUSSION: Recently, the operative fixation of multiple ribs fractures with intramedullary fixation devices has become popular. Despite the good outcomes with new rib splint designs, concern remains about the potential complications related to potential loss of fracture reduction with migration of the wire resulting in pain or additional injury to the surrounding tissues. CONCLUSION: Surgeons should pay attention to any protrusion of intramedullary rib implants, especially in the evaluation of routine X-rays following surgical treatment. We should be aware of the possibility of this rare cause of snapping scapula syndrome to avoid delayed diagnosis and consider removing the implant will resolve the pain.
The Journal of Hand Surgery, Sep 1, 2017
Grant received from: Arthrex (2016) COI: There is no financial information to disclose. Hypothesi... more Grant received from: Arthrex (2016) COI: There is no financial information to disclose. Hypothesis: We hypothesized that the arthroscopic hook test would be accurate and reliable diagnostic test for foveal triangular fibrocartilage complex (TFCC) detachment. Methods: Wrist arthroscopy was performed on 14 cadaveric upper extremities amputated at the mid-humerus level. Arthroscopic hook and trampoline tests were performed, graded as either positive or negative, and arthroscopic videos recorded ("baseline" condition). The Revision of Aptis Components
Revue de Chirurgie Orthopédique et Traumatologique, Sep 1, 2021
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 19, 2016
Introducción: Las fracturas articulares completas de radio distal (tipo AO C) en jóvenes represen... more Introducción: Las fracturas articulares completas de radio distal (tipo AO C) en jóvenes representan un desafío por la demanda funcional de este subgrupo y la necesidad de una reducción articular para evitar la artrosis postraumática. El objetivo es evaluar los resultados clínicos y radiológicos de pacientes <65 años con fracturas de radio distal de tipo C tratadas mediante placa palmar bloqueada. Materiales y Métodos: Se analizaron 292 pacientes con fracturas de radio distal, 71 cumplieron los criterios de inclusión. Cuarenta y cinco eran mujeres (media de la edad 51 años; rango 20-64). El seguimiento promedio fue de 28 meses (rango 6-71). Se realizó una evaluación clínica objetiva (rango de movilidad) y subjetiva de la función (Quick DASH y escala analógica visual funcional) y del dolor (escala analógica visual en reposo y escala de Swanson), además de una valoración radiológica. Resultados: El Quick DASH promedio fue de 8,7 (rango 0-60), con un puntaje en la escala analógica visual funcional de 8,9 (rango 3-10). La movilidad final promedio y comparativa con el lado sano fue: flexo-extensión 91%, pronosupinación 97%, desviaciones cubital-radial 90%. Respecto del dolor, el puntaje promedio en la escala analógica visual fue de 0,4 (rango 0-10). Siempre se recuperaron los parámetros radiológicos extrarticulares, con corrección de 26 de los 29 escalones articulares preoperatorios. Conclusión: En pacientes jóvenes, el tratamiento de las fracturas de radio distal de tipo C con placa palmar bloqueada logra resultados clínicos y radiológicos favorables con corrección de la mayoría de los escalones articulares. Palabras clave: Fractura articular; radio distal; placa palmar bloqueada; joven. Nivel de Evidencia: IV Clinical and radiological results in young patients with complete articular distal radius fractures treated with volar locked plate
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Feb 15, 2018
Introducción: El objetivo de este estudio es analizar los resultados clínicos y radiológicos a la... more Introducción: El objetivo de este estudio es analizar los resultados clínicos y radiológicos a largo plazo de una serie de pacientes con enfermedad de Kienböck en estadios II y IIIA de la clasificación de Lichtman, tratados mediante descompresión metafisaria del radio distal. Materiales y Métodos: Estudio retrospectivo y descriptivo que incluyó a 23 pacientes con enfermedad de Kienböck (estadios II y IIIA de Lichtman) tratados mediante descompresión metafisaria del radio distal con, al menos, 10 años de seguimiento. Al final del seguimiento,
Hand, Jul 7, 2016
Background:The purpose of this study was to evaluate the rate of patency after delayed repair of ... more Background:The purpose of this study was to evaluate the rate of patency after delayed repair of the ulnar artery following primary ligation. Methods: Adult patients with primary ligation of the injured ulnar artery at the forearm who had a delayed repair of the artery were included. Postoperative arterial patency was determined by either physical examination or color Doppler ultrasonographic imaging. Postoperative complications and Disabilities of the Arm, Shoulder and Hand score were recorded. Results: Eight consecutive patients during a 3-year period were included. The mean age was 35 years. Four cases were women. The surgery was performed at a mean of 5 days after the injury and ligation. At a mean follow-up of 22 months, 7 patients had a patent artery. One patient suffered a hematoma. Conclusions: A high rate of patency can be obtained after delayed repair of the ulnar artery at the forearm.
The Journal of Hand Surgery, Sep 1, 2017
Purpose This study was designed to analyze the long-term clinical and radiological outcomes of a ... more Purpose This study was designed to analyze the long-term clinical and radiological outcomes of a series of patients with Kienböck disease stage IIIA treated with radius core decompression. Methods This retrospective study included 15 patients with Kienböck disease (Lichtman stage IIIA) who underwent distal radius metaphyseal core decompression between 1998 and 2005 and who were followed-up for at least 10 years. At the last follow-up, the patients were evaluated for wrist range of motion and grip strength. The overall results were evaluated by the modified Mayo wrist score and visual analog scale pain score. We also compared the radiological changes between the preoperative and the final follow-up in their Lichtman classification and the modified carpal height ratio. Results The mean follow-up period was 13 years (range, 10e18 years). Based on the modified Mayo wrist score, clinical results were excellent in 6 patients, good in 8 patients, and poor in 1 patient who required a proximal row carpectomy as revision surgery. The mean preoperative pain according to the visual analog scale was 7 (range, 6e10) and was 1.2 (range, 0e6) at the final follow-up. Compared with the opposite side, the average flexion/extension arc was 77% and the grip strength was 80%. All patients, except 1, returned to their original employment. At the final follow-up, 3 patients had decreased modified carpal height ratio, 12 remained unchanged. Radiographic disease progression according to the Lichtman classification to stages IIIB to IV occurred in only 2 wrists. There were no complications related to the core decompression. Conclusions In this limited series, the radius core decompression demonstrated favorable longterm results and could be considered as a surgical alternative for stage IIIA of Kienböck disease.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Apr 14, 2021
Comunicar los resultados en pacientes con un proceso infeccioso del codo, tratados en 2 etapas qu... more Comunicar los resultados en pacientes con un proceso infeccioso del codo, tratados en 2 etapas quirúrgicas: la primera con un espaciador de cemento con antibiótico y la segunda con una artroplastia total de codo. materiales y métodos: Se describen los criterios de inclusión, el diagnóstico de infección y las 2 etapas quirúrgicas. Resultados: Se incluyeron 10 pacientes (4 hombres y 6 mujeres, edad promedio 62 años). Causas iniciales: degenerativas (2 casos) y traumáticas (8 casos). Se realizaron 4 aloprótesis y 2 colgajos de dorsal ancho. Se identificaron 2 grupos: A (defectos óseos <4 cm) y B (>4 cm). El seguimiento fue de 5 años. La flexo-extensión fue de 117°/29° en el preoperatorio y 130°/29° en el posoperatorio; los puntajes de dolor fueron 6,5 y 2,5 (EAV); 40 y 80 (MEPS); y 56 y 30 (DASH), respectivamente. La fuerza de extensión fue de M5 (4 casos), M4 (2 casos), M3 (1 caso), M1 (2 casos) y M0 (1 caso). Un paciente tuvo una necrosis del colgajo que evolucionó con infección y 9 no tenían infección al final del seguimiento. Los pacientes del grupo A tenían menos cirugías previas y mejores resultados funcionales. Conclusiones: El tratamiento de un proceso infeccioso de codo mediante un espaciador de cemento con antibiótico permite controlar la infección en un alto porcentaje de los casos. La reconstrucción protésica secundaria es demandante y se asocia a complicaciones. Cabe esperar que, cuanto más grande sea el defecto óseo y mayor la cantidad de procedimientos previos, los resultados funcionales sean peores. Palabras clave: Artroplastia de codo; prótesis de codo; infección; osteomielitis; espaciador de cemento. nivel de evidencia: IV Total elbow Arthroplasty After an Infectious Process. Two-stage surgery AbsTRACT Objective: To report the results of patients with an infectious elbow process, treated in 2 surgical stages: the first with an antibiotic cement spacer (ACS) and the second with a total elbow arthroplasty. materials and methods: The inclusion criteria, the diagnosis of infection and the 2 surgical stages are described. Results: 10 patients were included (7 men and 3 women), average age: 62 years old. Initial causes: degenerative in 2 cases and traumatic in 8. 4 alloprostheses and 2 latissimus dorsi flaps were performed. Follow-up was 5 years. Flexo-extension was 117°/29° in preoperative and 130°/29° in postoperative; pain according to VAS: 6.5 and 2.5; MEPS: 40 and 80; DASH 56 and 30 respectively. The extension strength was M5 (4 cases), M4 (2), M3 (1), M1 (2) and M0 (1). One patient presented a necrosis of the flap that evolved with infection. In 9 of the 10 cases the patients were free of infection at the end of the follow-up. Two groups of patients were identified: Group A (bone defects less than 4 cm) and B (more than 4 cm). Group A patients had fewer previous surgeries and better functional outcomes. Conclusion: The treatment of an infectious elbow process through the placement of antibiotic cement spacer, allows a control of the infection in a high percentage of cases. Secondary prosthetic reconstruction is demanding and associated with complications. It is to be expected that the greater the bone defect and the greater the number of previous procedures, the worse the functional results.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, Nov 12, 2019
Resumen La compresión mecánica de un nervio periférico en dos sitios diferentes a lo largo de su ... more Resumen La compresión mecánica de un nervio periférico en dos sitios diferentes a lo largo de su trayecto se define como síndrome de doble compresión. Esta enfermedad se basa en la teoría de la mayor susceptibilidad que tendría un nervio a nivel distal cuando este también se encuentra comprimido, en forma asintomática, a nivel proximal, debido a una alteración en el flujo axonal. Si bien la descompresión del túnel carpiano es una cirugía con resultados previsibles, hay pacientes operados por síndrome del túnel carpiano que no mejoran después de una cirugía, como cabría esperar. Si se excluye de este análisis a las comorbilidades, como diabetes, casos avanzados con atrofia muscular o descompresiones insuficientes, muchos de estos fracasos terapéuticos podrían estar fundamentados por el escaso diagnóstico de un segundo sitio de compresión concomitante. No obstante, existe gran controversia alrededor del síndrome de doble compresión que involucra no solo a su existencia, sino también a su incidencia y fisiopatología. El objetivo de esta publicación es presentar una revisión bibliográfica crítica del síndrome de doble compresión centrada en el compromiso del nervio mediano tanto en la muñeca como en el codo. Palabras clave: Túnel carpiano; nervio mediano; síndrome del pronador redondo.
The journal of hand surgery, Jan 14, 2022
Background: Core decompression of the distal radius is a minimally invasive technique that has de... more Background: Core decompression of the distal radius is a minimally invasive technique that has demonstrated good clinical outcomes in the treatment of Kienböck disease. However, the effectiveness of core decompression has not been compared in different age groups. The aim of this study is to compare the outcomes of core decompression in patients <45 years of age to those ≥45 years of age. Methods: This retrospective study included 36 patients with Kienböck disease who were treated with core decompression over a 20-year period. The mean follow-up was 7 years. Outcome measures included visual analogue scale pain score (VAS), active range of flexion/extension at the wrist, grip strength, and modified Mayo wrist score. The patients were divided into two age groups namely <45 years (younger group; n = 22) and ≥45 years (older group; n = 12) and the outcome measures were compared between the two age groups. Results: There were no statistically significant differences between the outcomes of the two age groups. Conclusion: The outcomes of core decompression of the distal radius for Kienböck disease in older patients (≥45 years) are favorable and similar to those seen in younger patients (<45 years). Level of Evidence: Level III (Therapeutic)
European Journal of Orthopaedic Surgery and Traumatology, Mar 29, 2021
Purpose The objective of this study is to evaluate the effect of absolute stability (AS) versus r... more Purpose The objective of this study is to evaluate the effect of absolute stability (AS) versus relative stability (RS) performed through a minimally invasive plate osteosynthesis (MIPO) in AO/OTA 12A1 and 12A2 fractures on healing and the time to radiographic union. Methods This was a retrospective cohort study of all patients treated with plate fixation for AO/OTA type 12A1–A2 fractures at a single institution. Patients were grouped according to the type of stability used in their surgery. Time until radiographic union was estimated using the Kaplan–Meier method, which was compared by long-rank test between both types of surgical techniques. Results A total of 70 patients were included in this study with 35 patients in each group. The median follow-up was 9 (IQR 6–14) months. The median time to radiographic union was significantly lower in the AS group than in the RS group: 12 (interquartile range (IQR) 10–14) weeks versus 18 (IQR 16–19) weeks, respectively ( p < 0.001). Non-union was seen in two cases (7%) in the relative stability group. Three patients in the RS group developed a post-operative radial nerve palsy. Conclusion The main finding of this study is that the median time to radiographic union was significantly shorter in the patients treated with AS compared to those with a RS technique. These findings support the recommendations of the AO foundation in that simple metaphyseal fractures (type A) that require surgical treatment should be treated with an AS construct. RS techniques should be reserved to multifragmentary fractures where fragment preservation of blood supply is paramount.
The journal of hand surgery, Nov 9, 2021
Background: Volar locking plates have provided the capability to repair both simple and complex f... more Background: Volar locking plates have provided the capability to repair both simple and complex fractures. However, complications related to the inability to fix or to maintain the fixation of some fracture patterns have been reported with volar locking plates. The purpose of this study was to evaluate the results of dorsal plating treatment for specific pattern of fractures. Methods: Patients with distal radius fractures were retrospectively evaluated. Inclusion criteria for this study were those related to the patient and treatment (adult patients, internal fixation with dorsal plating, a minimum follow-up of 12 months), and those related to the fracture pattern (displaced central articular fragment, volar distal fracture line not enough to allow volar fixation, displaced dorsal-ulnar fragment, dorsal partial fractures, combination of these patterns). Clinical outcome information including active range of motion, radiographs, PRWE and DASH questionnaires were collected. Complications were recorded. Results: During a 6-year period, 679 distal radius fractures were treated with open reduction and internal fixation. Of these, 27 patients fulfilled the inclusion criteria. Patients were examined at a median of 34 months’ follow-up. All but pronation, supination, and radial deviation had a statistically significant difference compared to the opposite side. The median score on the DASH was 4.5 and 3.2 on the PRWE. No patient suffered loss of reduction during the follow-up nor were tendon ruptures recorded. Conclusions: Although most of the distal radius fractures can be treated with volar locking plates, almost 5% of them present specific patterns that are amenable to treatment with dorsal fixation, without postoperative loss of reduction. These specific patterns are: (1) displaced central articular fragment, (2) volar distal fracture with less of 1cm distance from the distal volar edge of the radius, (3) displaced dorso-ulnar fragment, (4) Barton’s fracture, (5) combination of these patterns.
Case reports in orthopedics, 2015
The unilateral rupture of the triceps brachii tendon is a rare lesion representing 1% of all tend... more The unilateral rupture of the triceps brachii tendon is a rare lesion representing 1% of all tendon injuries. The most common causes are the result of a contraction against resistance (especially weightlifters) and direct trauma. It has also been associated with systemic diseases such as diabetes mellitus, chronic renal failure, secondary hyperparathyroidism, and use of systemic corticosteroids. Simultaneous bilateral rupture of the triceps tendons is less frequent and has been described in association with chronic metabolic disorders, especially in those patients on hemodialysis. This paper presents a case of bilateral triceps tendon rupture of a 36-yearold woman with renal transplantation secondary to chronic renal failure. Early surgical repair was performed using a bone tunnel technique with a nonabsorbable suture. Clinically active extension with 135 degrees of range of motion was achieved.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
The integrity of the extensor apparatus is essential for the correct functioning of an elbow pros... more The integrity of the extensor apparatus is essential for the correct functioning of an elbow prosthesis. Triceps deficiency has been considered a relative contraindication for arthroplasty, because it produces a flexion contracture and an active extension deficit. These limitations can significantly affect the functional improvement that total elbow arthroplasty produces. Faced with an olecranon nonunion, the placement of a total elbow prosthesis is presented as a complex problem to be solved. The objective of this article is to describe the surgical technique for the placement of a total elbow prosthesis in the context of an olecranon nonunion, and to report three cases.
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
Objetivo: Comunicar los resultados de una serie de adultos con consolidaciones en valgo del codo ... more Objetivo: Comunicar los resultados de una serie de adultos con consolidaciones en valgo del codo tratados con una osteotomía en cuña sustractiva monoplanar. Materiales y Métodos: Se incluyeron 5 pacientes. Se describe la técnica quirúrgica que consistió en un abordaje posterior paratricipital, resección en cuña sustractiva y transposición anterior del nervio cubital. El seguimiento promedio fue de 17 meses. Resultados: Se trató a 4 hombres y una mujer, con una edad promedio de 27 años. La movilidad preoperatoria promedio fue de 138º-7° y la posoperatoria, de 138-6°, el puntaje de dolor en la EAV fue de 4 y 1, el MEPS de 71 y 97, y el DASH de 26 y 8, respectivamente. La evaluación radiográfica preoperatoria arrojó un valgo promedio de 30º con un valgo contralateral de 11º. La corrección radiográfica demostró un valgo de 13º. Se obtuvo una corrección promedio de 2° menos que del otro lado. Todas las osteotomías consolidaron, y la medición de la prominencia medial fue, en promedio, un ...
Revista de la Asociación Argentina de Ortopedia y Traumatologia, 2021
Introducción: El objetivo de esta serie de casos es describir los resultados y las complicaciones... more Introducción: El objetivo de esta serie de casos es describir los resultados y las complicaciones de pacientes con heridas graves con defecto de cobertura en zonas críticas tratadas con una matriz dérmica acelular. Materiales y Métodos: Se realizó una revisión retrospectiva de los pacientes con déficit de cobertura en zonas críticas tratados con matriz dérmica acelular en nuestro centro. Definimos como zona crítica al déficit de cobertura que no pueda ser tratado solo con injerto de piel. Evaluamos variables preoperatorias, intraoperatorias y posoperatorias. Resultados: Los diagnósticos iniciales fueron tumor (3 pacientes), trauma agudo (3 pacientes) y secuela de síndrome compartimental (2 pacientes). El defecto de cobertura estaba localizado en la pierna (3 casos), en la mano (2 casos), en el muslo (1 caso), en el antebrazo (1 caso) y en el pie (1 caso). La zona crítica se caracterizó por exposición tendinosa con pérdida de peritenon (5 casos), exposición ósea y pérdida de periosti...