Vasfi Karatosun - Academia.edu (original) (raw)

Papers by Vasfi Karatosun

The Journal of Bone and Joint Surgery, 2000

S even children with a post-traumatic cubitus varus deformity were treated using the Ilizarov tec... more S even children with a post-traumatic cubitus varus deformity were treated using the Ilizarov technique of distraction osteogenesis. The outcome was rated as excellent in each case and all were satisfied with the cosmetic appearance. No complications had been encountered by the latest follow-up at a mean of 66.7 months. This technique seems reliable for the treatment of such deformities, provided that it achieves full correction by gradual distraction. Nerve palsy and unsightly scars are avoided, and the range of movement of adjacent joints is preserved.

Canadian Medical Association Journal, 2007

Gene, 2013

Fibrodysplasia ossificans progressiva (FOP) is a rare genetic disease characterized with congenit... more Fibrodysplasia ossificans progressiva (FOP) is a rare genetic disease characterized with congenital malformations of the great toes and progressive heterotopic ossifications in the skeletal muscles and soft tissue. FOP has been associated with a specific point mutation on the ACVR1 (Activin A receptor type I) gene. Four sporadic cases clinically diagnosed as FOP have been included in this study for mutational analysis. In three patients, heterozygote c.617G&amp;amp;amp;amp;amp;amp;amp;gt;A; p.R206H mutation was detected by both DNA sequence analyses and by HphI restrictive enzyme digestion. In the fourth patient, a heterozygote c.774G&amp;amp;amp;amp;amp;amp;amp;gt;T; p.R258S mutation in exon 5 was detected by DNA sequence analysis.

Clinical Rehabilitation, Jun 1, 2005

Objective: Hip rating systems have been widely used in assessing severity of hip dysfunction but ... more Objective: Hip rating systems have been widely used in assessing severity of hip dysfunction but no uniform method has emerged. The current study was performed to determine the interobserver reliability of five different hip scores on patients with coxarthrosis. Design: Test reliability among physical therapists for five commonly used hip scores. Subjects: Thirty-five patients (48 hips) who had coxarthrosis and who were candidates for total hip arthroplasty were included in the study. Methods: Patients were evaluated preoperatively by three physical therapists using five different hip rating systems; the Harris Hip Score, the Iowa Hip Score, the Charnley Hip Score, the Merle d'Aubigne Hip Score and the American Academy of Orthopaedic Surgeons' Hip Score. Results: The average age of the patients was 58.89±2.2 years (range 28=–76 years). For all scores, an excellent interobserver reliability between the physical therapists were found ( k=0.77–0.95). The best correlation between first and second observer was on Harris Hip Score ( k=0.91), between second and third was on Merle d'Aubigne Hip Score ( k=0.95) and between first and third was on Iowa Hip Score ( k=0.87). Conclusion: There was an excellent interobserver reliability for all hip scores between the physical therapists, suggesting that all these hip scores are suitable for use by physical therapists.

Archives of Gerontology and Geriatrics, 2016

To investigate the effects of the home exercise therapy performed after at least four years posto... more To investigate the effects of the home exercise therapy performed after at least four years postoperatively on skeletal muscle strength and functionality in patients with total knee arthroplasty (TKA). Sixty patients (age; 69.66±7.53, weight; 81.56±14.43 kg, 10 male, 50 female) followed up four or more years were randomly divided into two groups. An 8-week exercise program was designed for bilateral TKA patients. While the patients in one group were assigned to weighted exercise group, the patients in the other group were assigned to non-weighted exercise group. The primary outcome was the isometric muscle strength of quadriceps femoris (QF) and hamstring muscles assessed by Hand-Held Dynamometer. The secondary outcomes were the pain level, 30s sit-to-stand test, 10 m walk test, range of motion, and the knee function score of the Hospital for Special Surgery. The assessments were performed before and after the treatment. After treatment, significant differences were found in all evaluation parameters (except rest pain and range of motion) in favour of the weighted group. QF muscle strength changes (kg); weighted group: 1.99±1.70, non-weighted group: 0.51±1.14 (p=0.000), 30s sit-to-stand test changes (repetitions); weighted group: 3.66±2.23, non-weighted group: 1.70±1.95 (p=0.000), 10 m walk test changes (seconds); weighted group: -2.60±1.30, non-weighted group: -0.83±3.51 (p=0.000). Home exercise programs applied to TKA patients after at least four years postoperatively was effective in increasing muscle strength, decreasing severity of pain, and improving functional activities. The improvements were significantly greater in weighted compared with the non-weighted exercise group.

Acta Ortopédica Brasileira, 2015

Objective: To investigate the reliability of the 50-Foot Walk Test (50 FWT) and 30-second Chair S... more Objective: To investigate the reliability of the 50-Foot Walk Test (50 FWT) and 30-second Chair Stand Test (30 CST) in patients who have undergone total knee arthroplasty (TKA). Methods: The study was designed as a test-retest research. Thirty-three patients who would undergo bilateral TKA were recruited. The tests 30 CST and 50 FWT were performed twice on the same day with 5-minute intervals, respectively. Between the first and second tests, patients waited for an hour on sitting position in order to prevent fatigue. In addition to these tests, we registered the knee pain experienced by the patients using a 100 mm VAS scale. Results: The 50 FWT and 30 CST showed excellent reliability. ICC for 50 FWT and 30 CST were 0.97 and 0.92, respectively. SRD95 was 1.07 for 50 FWT and 0.96 for 30 CST. Conclusions: According to results of this study, both 50 FWT and 30 CST have excellent reliability in patients with TKA. These tests are simple, no time consuming and constitute sensitive methods to measure the functional performance in patients with TKA in the clinical settings. Clinicians and researchers may use these tests to quantify even small changes in functional performance for patients with TKA. Level of Evidence III, Diagnostic Study.

Hip International, 2013

Background: Walking ability is a crucial component of lower extremity function. Assessment of wal... more Background: Walking ability is a crucial component of lower extremity function. Assessment of walking after total hip arthroplasty (THA) provides important information about the healing process. Walking endurance, an important functional component of walking, can be reliably measured with the 6-minute walk test (6 mWT). Even though the 6 mWT is commonly used in patients with THA, its reliability has never been reported for this patient population. The aim of this study is to assess the reliability of the test-retest 6 mWT after THA. Methods: Thirty-four patients with THA performed two test trials on the same day, separated by a one hour seated rest. To assess reliability, intra-class correlation coefficient (ICC 2,1), standard error of measurement (SEM), and smallest real difference (SRD) were calculated. results: The 6 mWT showed a high reliability. The patients walked 3.71 metres more at the end of the second 6 mWT in comparison with the first test. The ICC 2,1 (AS 95), SEM (m), SEM 95 (m) and SRD 95 (m) were 0.96 (0.92), 3.67, 7.19, and 10.17 m respectively. conclusions: Reliability of the 6 mWT was high in patients with THA. The 6 mWT is a simple and sensitive method to measure the functional performance in patients with THA in the clinical setting. Moreover, clinicians and researchers can use the 6 mWT to quantify even small changes in functional performance after THA.

Orthopaedic Nursing, 2013

Although studies determinate that the tourniquet and high tourniquet pressure applications lead t... more Although studies determinate that the tourniquet and high tourniquet pressure applications lead to several complications and decelerate the rehabilitation, there was not any study investigating the effects of tourniquet pressure on rehabilitation outcomes and postoperative complications. To investigate the effects of the minimal and conventional tourniquet inflation pressures application on rehabilitation outcomes in patients undergoing total knee arthroplasty (TKA). Thirty-eight patients with unilateral primary TKA were included in the study. All patients underwent standardized inpatient physiotherapy during their hospital stay and followed by home-based exercise program. We used the Visual Analog Scale to quantify knee pain, Iowa Level of Assistance Scale, and Iowa Ambulation Velocity Scale to determine physical function. The dates of ability to perform straight leg raise actively and to reach 70° of knee flexion were recorded. Hospital for Special Surgery knee score and range of motion of all patients were assessed preoperatively, at 6, 12, and 26 weeks, postoperatively. There was a significant difference in terms of Iowa Level of Assistance Scale on the postoperative 2nd and 6th days in favor of minimal inflation pressure group, in addition to the significant difference in pain level at discharge and the date of 70° knee flexion reach in favor of the same group, but Hospital for Special Surgery score and movement were similar at 6, 12, and 26 weeks. There was no significant difference between the groups in the date of performing straight leg raise. We conclude that TKA operations with a tourniquet application at lower inflation pressures might minimize the complications of tourniquet use and the patients can gain more rapidly early functional mobility.

The Journal of Arthroplasty, 2014

Safe reduction of the femoral head into the true acetabulum requires a certain amount of femoral ... more Safe reduction of the femoral head into the true acetabulum requires a certain amount of femoral shortening in patients with high dislocation of the hip. In subtrochanteric shortening applications, to reduce complications it is necessary to maintain a stable fixation at the osteotomy line. The purpose of this study is to investigate frequently used methods from a biomechanical point of view. Four osteotomy groups were created with composite femurs to investigate subtrochanteric osteotomies; transverse, oblique, zsubtrochanteric and double Chevron. All loading tests were carried out with two implant types both with and without strut graft and cable fixation. No single inherent feature increasing the stability of the investigated osteotomy types was found. Additionally graft application did not have a significant contribution to stability.

Acta Orthopaedica et Traumatologica Turcica, 2010

Proksimal femur deformitesi olan koksartrozlu hastalar›n total kalça protezi uygulamala-r› sorunl... more Proksimal femur deformitesi olan koksartrozlu hastalar›n total kalça protezi uygulamala-r› sorunludur. Bu olgularda hastaya özgü yap›lan protezler ya da proksimal bir osteotomi gerekmektedir; bu da komplikasyon oranlar›n› artt›rmaktad›r. Bu çal›flman›n amac› proksimal femoral deformiteli hastalarda plakl› kalça protezi (PKP) uygulamalar›m›z›n sonuçlar›n› sunmakt›r. Çal›flma plan›: Çal›flmaya ameliyat tarihinde ortalama yafl› 56.4 (da¤›l›m 19-75) olan yedi ka-d›n, sekiz erkek 15 olgu al›nd›. Etyolojik nedenler 12 hastada travmatik koksartroz, üç hastada avasküler nekrozla birlikte femur boyun k›r›¤› kaynamamas› idi. Olgular›n tümünde femura üçüncü nesil PKP uygulan›rken, asetabuler bölgede çimentosuz standart cup uygulanan üç olgu d›fl›nda tümüne Protek expansion cup uyguland›. Tüm ameliyatlar Hardinge yaklafl›m› ile yap›l-d›. Hastalar en az 3 y›l (da¤›l›m 36-116 ay) izlendi ve klinik olarak Harris Kalça Skoru ile de¤erlendirildi. Sonuçlar: Harris Kalça Skoru ortalamas› preoperatif dönemde 51.2 (da¤›l›m 15-79) iken son izlemde 92.7'ye (da¤›l›m 60-100) yükselmifltir. Postoperatif 12. ayda iki olguda zone (bölge) üçte femoral komponentte gevfleme gözlendi. Bunlardan birine intramedüller protez uyguland› di¤eri ise asemptomatikti. Ç›kar›mlar: Proksimal femur malformasyonu olan olgularda, teknik zorluklardan ve hastaya özgü yap›lan protezlerden kaç›nmak için plakl› kalça protezi iyi bir alternatiftir. Anahtar sözcükler: Kalça; koksartroz; plakl› kalça protezi; proksimal femoral deformite.

Archives of orthopaedic and trauma …, 2003

Background: In the hierarchy of research designs, randomized controlled trials and meta-analyses ... more Background: In the hierarchy of research designs, randomized controlled trials and meta-analyses are considered to be evidence of the highest grade, and scientific journals are the main source of scientific information. Methods: Using the National Library of Medicine Medline database, all randomized controlled trials and metaanalyses from 1966 to 1999 were retrieved from the journals indexed in the core list of the Science Citation Index in 1999, dedicated primarily to orthopaedics. The abstracts of the articles were reviewed independently by each author and classified by the year, journal name and subject. Results: The total number of articles was 36,293, of which only 671 were randomized controlled trials (1.85%) and 12 were meta-analyses (0.03%). Although there was a progressively increasing trend for randomized controlled trials, more than half of them (81.9%) were published in four journals. Of the randomized controlled trials, 66% was about arthroplasty, and hip and knee arthroplasties covered 90.7%. Conclusion: Although the number of randomized controlled trials and meta-analyses is tending to increase, the conclusion of this study is that the high-quality evidence provided by the major orthopaedic journals is quite low, and more randomized controlled trials and meta-analyses are needed for evidence-based orthopaedic practice.