Yannick Carrillon - Academia.edu (original) (raw)

Papers by Yannick Carrillon

Research paper thumbnail of Particularités anatomiques et fonctionnelles

Les trois groupes musculaires du corps les plus concernes par les traumatismes sont les ischio-ja... more Les trois groupes musculaires du corps les plus concernes par les traumatismes sont les ischio-jambiers, le quadriceps (notamment le droit femoral) et le triceps sural (en particulier le gastrocnemien medial). A l’exception du court biceps femoral, ils sont tous bi-articulaires, donc soumis a de grandes variations de longueur. Le siege principal des lesions est la jonction myo-tendineuse qui est une zone de faiblesse anatomique. La survenue de la lesion est fonction de trois parametres d’etirement : le degre, la vitesse et la force du traumatisme. Certains gestes sportifs sont pourvoyeurs de lesions specifiques : arme du tir au football : droit femoral ; demarrage brutal : insertion basse du gastrocnemien medial ; frappe de balle au football : ischio-jambiers. Contrairement a une idee recue, il n’existe pas de risque lesionnel specifique de lesion musculaire intrinseque selon la morphologie ou la typologie du muscle. Tout muscle peut etre modifie par l’entrainement grâce au systeme ...

Research paper thumbnail of Le muscle du sportif

Journal de Radiologie, 2007

Research paper thumbnail of MR Diagnosis of Lipoid Pneumonia

Journal of Computer Assisted Tomography, 1988

High signal intensity on both T1 and T2 spin-echo sequence was found with magnetic resonance imag... more High signal intensity on both T1 and T2 spin-echo sequence was found with magnetic resonance imaging in one case of lipoid pneumonia related to mineral oil aspiration. This finding, rather specific of lung parenchyma infiltrated by lipids, may help for the diagnosis of lipoid pneumonia.

Research paper thumbnail of EUROVISCO Guidelines for the Design and Conduct of Clinical Trials Assessing the Disease-Modifying Effect of Knee Viscosupplementation

Cartilage, 2018

Objectives Hyaluronic acid viscosupplementation is a commonly used intra-articular treatment for ... more Objectives Hyaluronic acid viscosupplementation is a commonly used intra-articular treatment for osteoarthritis (OA). Some recent preclinical and clinical trials have demonstrated a potential for its disease-modifying effects. The goal of this expert opinion, consensus-driven exercise is to provide guidelines for the design and conduct of clinical trials assessing the disease-modifying effect of viscosupplementation in the knee. Methods The EUROVISCO group constitutes 10 members who had expertise in clinical research methodology in the field of OA and viscosupplementation. They initially drafted issues through an iterative process and had to vote on their degree of agreement on these recommendations. The scores were pooled to generate a median agreement score for each recommendation. Results The document includes 31 recommendations regarding study population, imaging, clinical and biological assessment of disease-modifying effects of viscosupplementation. Agreements were reached on ...

Research paper thumbnail of Bone MRI segmentation assessment based on synchrotron radiation computed microtomography

In this paper, we propose an original scheme to assess the efficiency of segmentation algorithms ... more In this paper, we propose an original scheme to assess the efficiency of segmentation algorithms requested to quantify bone architecture from 3D micro MRI techniques. Our scheme takes advantage of the high quality images provided by Synchrotron Radiation Computed MicroTomography (SR μCT). To perform this assessment, calcaneus samples were acquired both from SR μCT and MRI devices. The segmentation process

Research paper thumbnail of 1325 Le muscle du sportif

Journal de Radiologie, 2005

Research paper thumbnail of Platelet-rich plasma as a treatment for chronic patellar tendinopathy: comparison of a single versus two consecutive injections

Muscles, ligaments and tendons journal

platelet-rich-plasma is increasingly used in chronic patellar tendinopathy. Ideal number of PRP i... more platelet-rich-plasma is increasingly used in chronic patellar tendinopathy. Ideal number of PRP injections needed is not yet established. This study compares the clinical outcomes of a single versus two consecutive PRP injections. between December 2009 and January 2012, 40 athletes with proximal patellar tendinopathy were treated by PRP injection. Patients received single (20 patients) or two PRP injections 2 weeks apart (20 patients). All patients underwent prospective clinical evaluation, including Victorian Institute of Sport Assessment-Patella (VISA-P) score, visual analog scale (VAS) for pain, and Tegner scale before PRP and after a minimum of 2 year follow-up. 9 patients failed PRP treatment and needed surgery. 1 patient was lost to follow-up. For the remaining patients, the VISA-P, VAS, and Tegner scores all significantly improved from 35.2 to 78.5 (p = 0.0001), 6.6 to 2.4 (p = 0.0001), and 4.8 to 6.9 (p = 0.0003). Patients who received two injections had better scores than t...

Research paper thumbnail of Réparation endoscopique des ruptures du tendon du moyen fessier : résultats préliminaires

Revue de Chirurgie Orthopédique et Traumatologique, 2014

Research paper thumbnail of 9 Réglage simple de la rotation fémorale dans les PTG, adapté à la morphologie fémorale

Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur, 2004

Research paper thumbnail of Suivi echographique apres reparation de la coiffe des rotateurs : a propos de 250 cas

Journal de Radiologie, 2009

Objectifs: Déterminer les signes échographiques de conflit du psoas après PTH. Matériels et métho... more Objectifs: Déterminer les signes échographiques de conflit du psoas après PTH. Matériels et méthodes: Groupe psoas pathologique: 15 patients consécutifs adressés pour suspicion de conflit du psoas sur PTH, avec résolution complète des symptômes après anesthésie échoguidée du tendon. Groupe témoin: 15 patients consécutifs adressés pour une échographie du membre supérieur, avec PTH asymptomatique. Critères analysés par deux radiologues: taille, échogénicité (coupe axiale) et angulation du tendon (coupe sagittale), liquide dans la bourse, présence d'une saillie cotyloïdienne antérieure (ciment, ostéophyte), présence d'un épanchement intra-articulaire. Résultats: Psoas plus hypoéchogènes et augmentés de volume dans le groupe pathologique (11/15) vs témoin (3/15). Angulation plus marquée du psoas statistiquement corrélée au groupe pathologique. Liquide dans la bourse plus fréquent dans le groupe pathologique (4/15) que chez les témoins (2/15). Saillie cotyloïdienne antérieure plus fréquente dans le groupe pathologique (7/15) que dans le groupe témoin (1115). Epanchement articulaire non corrélé à l'un ou l'autre des groupes. Conclusion: La présence d'une angulation tendineuse marquée et d'un aspect hypoéchogène du tendon semble être les 2 critères échographiques les plus intéressants pour diagnostiquer la présence d'un conflit du psoas après arthroplastie totale de hanche.

Research paper thumbnail of Posterolateral Bundle Reconstruction With Anteromedial Bundle Remnant Preservation in ACL Tears: Clinical and MRI Evaluation of 39 Patients With 24-Month Follow-up

Orthopaedic Journal of Sports Medicine, 2013

Background: Augmentation consisting of a selective reconstruction of the ruptured bundle while pr... more Background: Augmentation consisting of a selective reconstruction of the ruptured bundle while preserving the remnant bundle has been proposed as a treatment option for partial anterior cruciate ligament (ACL) tears. Good clinical outcomes after selective anteromedial (AM) bundle augmentation have been reported, whereas little is known about selective reconstruction of the posterolateral (PL) bundle with preservation of the AM bundle remnant.

Research paper thumbnail of Reconstruction isolée du faisceau postéro-latéral dans les ruptures partielles du LCA : Évaluation IRM et clinique d’une série de 40 patients à un recul moyen de 24 mois

Revue de Chirurgie Orthopédique et Traumatologique, 2012

Research paper thumbnail of Magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder

Revue du rhumatisme (English ed.), 1999

To describe magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder... more To describe magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder. Twenty patients with idiopathic adhesive capsulitis of the shoulder underwent magnetic resonance imaging involving two spin-echo T2-weighted sequences with fat saturation and two spin-echo T1-weighted postgadolinium sequences; for all sequences, sections were obtained in the oblique coronal and transverse axial planes. Findings were compared to those obtained using the same imaging protocol in 15 patients with clinical manifestations of rotator cuff tear. Postgadolinium enhancement of the joint capsule and synovial membrane was seen in the rotator interval in all 25 adhesive capsulitis patients and in the axillary recess in 22 of the 25. Only one of the 15 rotator cuff tear patients had this finding. In both groups, postgadolinium enhancement occurred in the subacromial bursa, in the rotator cuff tendons, and in the acromioclavicular joint. No significant rotator cuff tears were found ...

Research paper thumbnail of Patellar Instability: Assessment on MR Images by Measuring the Lateral Trochlear Inclination—Initial Experience1

Radiology, 2000

Lateral trochlear inclination (LTI) of the knee was compared on magnetic resonance (MR) images ob... more Lateral trochlear inclination (LTI) of the knee was compared on magnetic resonance (MR) images obtained in 30 patients with patellar instability (PI) and 30 patients with nonspecific internal knee derangement. Differences in LTI values between the two populations were significant (P <.001). Reproducibility of the measurement was judged excellent with an intraclass correlation superior to 0.98. Below a threshold value fixed at 11 degrees, LTI appears to be an excellent diagnostic test of PI with a sensitivity of 0.93 (28/30), a specificity of 0.87 (26/30), and an accuracy of 0.90 (54/60).

Research paper thumbnail of Radiographic assessment of hip and knee osteoarthritis. Recommendations: recommended guidelines

Osteoarthritis and Cartilage, 1999

Pathological lesions of osteoarthritis, demonstrated by conventional radiography, can be assessed... more Pathological lesions of osteoarthritis, demonstrated by conventional radiography, can be assessed by scoring systems and/or measurement with a quite acceptable reproducibility. Scores are recommended for a rough staging of osteoarthritis and of bone changes. Measurement is recommended for assessment of joint space narrowing progression. A good assessment of progression implicates a perfect reproducibility of the radiographic image of the joint. Accuracy of standard radiograph is improved by some views such as the hip profile and the schuss view.

Research paper thumbnail of Clinical and Structural Results of Arthroscopic Repair of Isolated Subscapularis Tear

The Journal of Bone and Joint Surgery (American), 2012

Even though the frequency of arthroscopic repair of isolated lesions of the subscapularis tendon ... more Even though the frequency of arthroscopic repair of isolated lesions of the subscapularis tendon has increased, few studies have presented clinical and anatomical outcomes of this treatment. We hypothesized that, after an arthroscopic repair, structural outcomes in the muscle have an influence on functional results. A retrospective study was performed on twenty-two patients who had undergone arthroscopic repair of an isolated tear of the subscapularis tendon and had a mean follow-up of thirty-six months. Patients were evaluated preoperatively and postoperatively with use of the Constant-Murley score, a subjective shoulder value, the lift-off test, the belly-press test, and magnetic resonance imaging or computed tomography arthrography. The results were compared with those of a cohort of thirteen patients who underwent open repair of the subscapularis tendon tear. In the arthroscopic group, the Constant-Murley score improved from a mean of 66 points preoperatively to a mean of 85 points postoperatively (p < 0.05). The subscapularis tendon was healed in 86% of the patients. Three patients (14%) had a partial rupture limited to the superior tendon. Postoperatively, progression of fatty infiltration of the subscapularis muscle was observed in 55% of the patients. Ten patients (45%) had a severe but localized fatty infiltration area of the subscapularis muscle related to the larger tears. Subjective and functional outcomes were not influenced by tendon-healing or postoperative fatty infiltration (p > 0.05). Clinical testing was significantly improved, but incomplete corrections remained frequent. Although open repair resulted in higher subjective shoulder scores and better strength scores, most other clinical parameters, postoperative subscapularis testing results, and structural outcomes were comparable between the arthroscopic repair and the open repair group. Arthroscopic repair of isolated subscapularis tears was associated with improved shoulder function and improved results on clinical testing. The tendon-healing rate was high but resulted in incomplete correction of the results of clinical testing. Progression of fatty infiltration in the subscapularis muscle was observed on magnetic resonance imaging but did not influence the clinical outcomes.

Research paper thumbnail of Inferior limb stereoradiography: Technique and applications in clinical practice

Journal of Biomechanics, 1998

Research paper thumbnail of Is the Anterior Tibial Tuberosity a Reliable Rotational Landmark for the Tibial Component in Total Knee Arthroplasy?

The Journal of Arthroplasty, 2011

To analyze the morphology of the tibial plateau, we studied 100 computed tomographic scans of art... more To analyze the morphology of the tibial plateau, we studied 100 computed tomographic scans of arthritic knees and measured the mediolateral (ML) and anteroposterior (AP) dimensions as well as their aspect ratio using 3 reference axes of rotation: transepicondylar axis (TEA), posterior tibial margin (PTM), and anterior tibial tuberosity (ATT) axis. Relative to the TEA, the PTM was internally rotated by 1.6°± 5.1°, and the ATT externally rotated by 14.8°± 7.2°. The AP and ML dimensions and aspect ratio differ significantly when the reference axis was ATT compared with PTM or TEA and variations were greater while using ATT axis. Our data demonstrate (1) that design of the tibial component restricts the choice of rotational alignment and (2) that ATT is not a reliable landmark for rotation of the tibial component.

Research paper thumbnail of Management of haemophilic arthropathy

Haemophilia, 2008

Despite the tremendous benefit offered by primary prophylaxis, recurrent joint bleeding with prog... more Despite the tremendous benefit offered by primary prophylaxis, recurrent joint bleeding with progression to chronic synovitis and haemophilic arthropathy is still a daily concern for the multidisciplinary health care teams managing patients with severe haemophilia or haemophilia complicated by inhibitor development. Advanced stages of arthropathy could be prevented by regular assessment of musculoskeletal status and thus early detection of symptoms, daily rehabilitation exercises at home, and implementation of appropriate physiotherapy and medical training. Patient's education and psychological counselling are crucial. New tools such as magnetic resonance imaging are promising for the monitoring of these patients and might promote early detection of arthropathy and thus appropriate preventive measures to avoid further joint deterioration can be implemented. Medical synovectomy such as radionucleide synoviorthesis is a simple and non-invasive procedure that often delays the need for surgery which despite considerable improvement in techniques and postoperative rehabilitation remains a high-risk strategy in patients with severe haemophilia, especially those with inhibitors. In these high risk patients, availability of specific clotting factors such as activated prothrombin complex concentrate (FEIBA, Baxter, Vienna, Austria) and more recently, recombinant factor VIIa (rFVIIa, NovoSeven, Bagsvaerd, Denmark) has allowed to perform effective and safe orthopaedic procedures. The on-going EUREKA study will undoubtedly provide additional information about the optimal use of rFVIIa in this context.

Research paper thumbnail of Prevalence of motion artifact simulating aortic dissection on spiral CT using a 180 ° linear interpolation algorithm for reconstruction of the images

European Radiology, 1997

... images P. Loubeyre, F. Grozel, Y. Carrillon, Ch. Gaillard, F. Guyard, O. Pellet, VA Tran Minh... more ... images P. Loubeyre, F. Grozel, Y. Carrillon, Ch. Gaillard, F. Guyard, O. Pellet, VA Tran Minh ... distensibility? Eur J Radiol 16 (2): 107–111 7. Kalender WA, Polacin A (1991) Physical performance charac-teristics of spiral CT scanning. ...

Research paper thumbnail of Particularités anatomiques et fonctionnelles

Les trois groupes musculaires du corps les plus concernes par les traumatismes sont les ischio-ja... more Les trois groupes musculaires du corps les plus concernes par les traumatismes sont les ischio-jambiers, le quadriceps (notamment le droit femoral) et le triceps sural (en particulier le gastrocnemien medial). A l’exception du court biceps femoral, ils sont tous bi-articulaires, donc soumis a de grandes variations de longueur. Le siege principal des lesions est la jonction myo-tendineuse qui est une zone de faiblesse anatomique. La survenue de la lesion est fonction de trois parametres d’etirement : le degre, la vitesse et la force du traumatisme. Certains gestes sportifs sont pourvoyeurs de lesions specifiques : arme du tir au football : droit femoral ; demarrage brutal : insertion basse du gastrocnemien medial ; frappe de balle au football : ischio-jambiers. Contrairement a une idee recue, il n’existe pas de risque lesionnel specifique de lesion musculaire intrinseque selon la morphologie ou la typologie du muscle. Tout muscle peut etre modifie par l’entrainement grâce au systeme ...

Research paper thumbnail of Le muscle du sportif

Journal de Radiologie, 2007

Research paper thumbnail of MR Diagnosis of Lipoid Pneumonia

Journal of Computer Assisted Tomography, 1988

High signal intensity on both T1 and T2 spin-echo sequence was found with magnetic resonance imag... more High signal intensity on both T1 and T2 spin-echo sequence was found with magnetic resonance imaging in one case of lipoid pneumonia related to mineral oil aspiration. This finding, rather specific of lung parenchyma infiltrated by lipids, may help for the diagnosis of lipoid pneumonia.

Research paper thumbnail of EUROVISCO Guidelines for the Design and Conduct of Clinical Trials Assessing the Disease-Modifying Effect of Knee Viscosupplementation

Cartilage, 2018

Objectives Hyaluronic acid viscosupplementation is a commonly used intra-articular treatment for ... more Objectives Hyaluronic acid viscosupplementation is a commonly used intra-articular treatment for osteoarthritis (OA). Some recent preclinical and clinical trials have demonstrated a potential for its disease-modifying effects. The goal of this expert opinion, consensus-driven exercise is to provide guidelines for the design and conduct of clinical trials assessing the disease-modifying effect of viscosupplementation in the knee. Methods The EUROVISCO group constitutes 10 members who had expertise in clinical research methodology in the field of OA and viscosupplementation. They initially drafted issues through an iterative process and had to vote on their degree of agreement on these recommendations. The scores were pooled to generate a median agreement score for each recommendation. Results The document includes 31 recommendations regarding study population, imaging, clinical and biological assessment of disease-modifying effects of viscosupplementation. Agreements were reached on ...

Research paper thumbnail of Bone MRI segmentation assessment based on synchrotron radiation computed microtomography

In this paper, we propose an original scheme to assess the efficiency of segmentation algorithms ... more In this paper, we propose an original scheme to assess the efficiency of segmentation algorithms requested to quantify bone architecture from 3D micro MRI techniques. Our scheme takes advantage of the high quality images provided by Synchrotron Radiation Computed MicroTomography (SR μCT). To perform this assessment, calcaneus samples were acquired both from SR μCT and MRI devices. The segmentation process

Research paper thumbnail of 1325 Le muscle du sportif

Journal de Radiologie, 2005

Research paper thumbnail of Platelet-rich plasma as a treatment for chronic patellar tendinopathy: comparison of a single versus two consecutive injections

Muscles, ligaments and tendons journal

platelet-rich-plasma is increasingly used in chronic patellar tendinopathy. Ideal number of PRP i... more platelet-rich-plasma is increasingly used in chronic patellar tendinopathy. Ideal number of PRP injections needed is not yet established. This study compares the clinical outcomes of a single versus two consecutive PRP injections. between December 2009 and January 2012, 40 athletes with proximal patellar tendinopathy were treated by PRP injection. Patients received single (20 patients) or two PRP injections 2 weeks apart (20 patients). All patients underwent prospective clinical evaluation, including Victorian Institute of Sport Assessment-Patella (VISA-P) score, visual analog scale (VAS) for pain, and Tegner scale before PRP and after a minimum of 2 year follow-up. 9 patients failed PRP treatment and needed surgery. 1 patient was lost to follow-up. For the remaining patients, the VISA-P, VAS, and Tegner scores all significantly improved from 35.2 to 78.5 (p = 0.0001), 6.6 to 2.4 (p = 0.0001), and 4.8 to 6.9 (p = 0.0003). Patients who received two injections had better scores than t...

Research paper thumbnail of Réparation endoscopique des ruptures du tendon du moyen fessier : résultats préliminaires

Revue de Chirurgie Orthopédique et Traumatologique, 2014

Research paper thumbnail of 9 Réglage simple de la rotation fémorale dans les PTG, adapté à la morphologie fémorale

Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur, 2004

Research paper thumbnail of Suivi echographique apres reparation de la coiffe des rotateurs : a propos de 250 cas

Journal de Radiologie, 2009

Objectifs: Déterminer les signes échographiques de conflit du psoas après PTH. Matériels et métho... more Objectifs: Déterminer les signes échographiques de conflit du psoas après PTH. Matériels et méthodes: Groupe psoas pathologique: 15 patients consécutifs adressés pour suspicion de conflit du psoas sur PTH, avec résolution complète des symptômes après anesthésie échoguidée du tendon. Groupe témoin: 15 patients consécutifs adressés pour une échographie du membre supérieur, avec PTH asymptomatique. Critères analysés par deux radiologues: taille, échogénicité (coupe axiale) et angulation du tendon (coupe sagittale), liquide dans la bourse, présence d'une saillie cotyloïdienne antérieure (ciment, ostéophyte), présence d'un épanchement intra-articulaire. Résultats: Psoas plus hypoéchogènes et augmentés de volume dans le groupe pathologique (11/15) vs témoin (3/15). Angulation plus marquée du psoas statistiquement corrélée au groupe pathologique. Liquide dans la bourse plus fréquent dans le groupe pathologique (4/15) que chez les témoins (2/15). Saillie cotyloïdienne antérieure plus fréquente dans le groupe pathologique (7/15) que dans le groupe témoin (1115). Epanchement articulaire non corrélé à l'un ou l'autre des groupes. Conclusion: La présence d'une angulation tendineuse marquée et d'un aspect hypoéchogène du tendon semble être les 2 critères échographiques les plus intéressants pour diagnostiquer la présence d'un conflit du psoas après arthroplastie totale de hanche.

Research paper thumbnail of Posterolateral Bundle Reconstruction With Anteromedial Bundle Remnant Preservation in ACL Tears: Clinical and MRI Evaluation of 39 Patients With 24-Month Follow-up

Orthopaedic Journal of Sports Medicine, 2013

Background: Augmentation consisting of a selective reconstruction of the ruptured bundle while pr... more Background: Augmentation consisting of a selective reconstruction of the ruptured bundle while preserving the remnant bundle has been proposed as a treatment option for partial anterior cruciate ligament (ACL) tears. Good clinical outcomes after selective anteromedial (AM) bundle augmentation have been reported, whereas little is known about selective reconstruction of the posterolateral (PL) bundle with preservation of the AM bundle remnant.

Research paper thumbnail of Reconstruction isolée du faisceau postéro-latéral dans les ruptures partielles du LCA : Évaluation IRM et clinique d’une série de 40 patients à un recul moyen de 24 mois

Revue de Chirurgie Orthopédique et Traumatologique, 2012

Research paper thumbnail of Magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder

Revue du rhumatisme (English ed.), 1999

To describe magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder... more To describe magnetic resonance imaging findings in idiopathic adhesive capsulitis of the shoulder. Twenty patients with idiopathic adhesive capsulitis of the shoulder underwent magnetic resonance imaging involving two spin-echo T2-weighted sequences with fat saturation and two spin-echo T1-weighted postgadolinium sequences; for all sequences, sections were obtained in the oblique coronal and transverse axial planes. Findings were compared to those obtained using the same imaging protocol in 15 patients with clinical manifestations of rotator cuff tear. Postgadolinium enhancement of the joint capsule and synovial membrane was seen in the rotator interval in all 25 adhesive capsulitis patients and in the axillary recess in 22 of the 25. Only one of the 15 rotator cuff tear patients had this finding. In both groups, postgadolinium enhancement occurred in the subacromial bursa, in the rotator cuff tendons, and in the acromioclavicular joint. No significant rotator cuff tears were found ...

Research paper thumbnail of Patellar Instability: Assessment on MR Images by Measuring the Lateral Trochlear Inclination—Initial Experience1

Radiology, 2000

Lateral trochlear inclination (LTI) of the knee was compared on magnetic resonance (MR) images ob... more Lateral trochlear inclination (LTI) of the knee was compared on magnetic resonance (MR) images obtained in 30 patients with patellar instability (PI) and 30 patients with nonspecific internal knee derangement. Differences in LTI values between the two populations were significant (P <.001). Reproducibility of the measurement was judged excellent with an intraclass correlation superior to 0.98. Below a threshold value fixed at 11 degrees, LTI appears to be an excellent diagnostic test of PI with a sensitivity of 0.93 (28/30), a specificity of 0.87 (26/30), and an accuracy of 0.90 (54/60).

Research paper thumbnail of Radiographic assessment of hip and knee osteoarthritis. Recommendations: recommended guidelines

Osteoarthritis and Cartilage, 1999

Pathological lesions of osteoarthritis, demonstrated by conventional radiography, can be assessed... more Pathological lesions of osteoarthritis, demonstrated by conventional radiography, can be assessed by scoring systems and/or measurement with a quite acceptable reproducibility. Scores are recommended for a rough staging of osteoarthritis and of bone changes. Measurement is recommended for assessment of joint space narrowing progression. A good assessment of progression implicates a perfect reproducibility of the radiographic image of the joint. Accuracy of standard radiograph is improved by some views such as the hip profile and the schuss view.

Research paper thumbnail of Clinical and Structural Results of Arthroscopic Repair of Isolated Subscapularis Tear

The Journal of Bone and Joint Surgery (American), 2012

Even though the frequency of arthroscopic repair of isolated lesions of the subscapularis tendon ... more Even though the frequency of arthroscopic repair of isolated lesions of the subscapularis tendon has increased, few studies have presented clinical and anatomical outcomes of this treatment. We hypothesized that, after an arthroscopic repair, structural outcomes in the muscle have an influence on functional results. A retrospective study was performed on twenty-two patients who had undergone arthroscopic repair of an isolated tear of the subscapularis tendon and had a mean follow-up of thirty-six months. Patients were evaluated preoperatively and postoperatively with use of the Constant-Murley score, a subjective shoulder value, the lift-off test, the belly-press test, and magnetic resonance imaging or computed tomography arthrography. The results were compared with those of a cohort of thirteen patients who underwent open repair of the subscapularis tendon tear. In the arthroscopic group, the Constant-Murley score improved from a mean of 66 points preoperatively to a mean of 85 points postoperatively (p < 0.05). The subscapularis tendon was healed in 86% of the patients. Three patients (14%) had a partial rupture limited to the superior tendon. Postoperatively, progression of fatty infiltration of the subscapularis muscle was observed in 55% of the patients. Ten patients (45%) had a severe but localized fatty infiltration area of the subscapularis muscle related to the larger tears. Subjective and functional outcomes were not influenced by tendon-healing or postoperative fatty infiltration (p > 0.05). Clinical testing was significantly improved, but incomplete corrections remained frequent. Although open repair resulted in higher subjective shoulder scores and better strength scores, most other clinical parameters, postoperative subscapularis testing results, and structural outcomes were comparable between the arthroscopic repair and the open repair group. Arthroscopic repair of isolated subscapularis tears was associated with improved shoulder function and improved results on clinical testing. The tendon-healing rate was high but resulted in incomplete correction of the results of clinical testing. Progression of fatty infiltration in the subscapularis muscle was observed on magnetic resonance imaging but did not influence the clinical outcomes.

Research paper thumbnail of Inferior limb stereoradiography: Technique and applications in clinical practice

Journal of Biomechanics, 1998

Research paper thumbnail of Is the Anterior Tibial Tuberosity a Reliable Rotational Landmark for the Tibial Component in Total Knee Arthroplasy?

The Journal of Arthroplasty, 2011

To analyze the morphology of the tibial plateau, we studied 100 computed tomographic scans of art... more To analyze the morphology of the tibial plateau, we studied 100 computed tomographic scans of arthritic knees and measured the mediolateral (ML) and anteroposterior (AP) dimensions as well as their aspect ratio using 3 reference axes of rotation: transepicondylar axis (TEA), posterior tibial margin (PTM), and anterior tibial tuberosity (ATT) axis. Relative to the TEA, the PTM was internally rotated by 1.6°± 5.1°, and the ATT externally rotated by 14.8°± 7.2°. The AP and ML dimensions and aspect ratio differ significantly when the reference axis was ATT compared with PTM or TEA and variations were greater while using ATT axis. Our data demonstrate (1) that design of the tibial component restricts the choice of rotational alignment and (2) that ATT is not a reliable landmark for rotation of the tibial component.

Research paper thumbnail of Management of haemophilic arthropathy

Haemophilia, 2008

Despite the tremendous benefit offered by primary prophylaxis, recurrent joint bleeding with prog... more Despite the tremendous benefit offered by primary prophylaxis, recurrent joint bleeding with progression to chronic synovitis and haemophilic arthropathy is still a daily concern for the multidisciplinary health care teams managing patients with severe haemophilia or haemophilia complicated by inhibitor development. Advanced stages of arthropathy could be prevented by regular assessment of musculoskeletal status and thus early detection of symptoms, daily rehabilitation exercises at home, and implementation of appropriate physiotherapy and medical training. Patient's education and psychological counselling are crucial. New tools such as magnetic resonance imaging are promising for the monitoring of these patients and might promote early detection of arthropathy and thus appropriate preventive measures to avoid further joint deterioration can be implemented. Medical synovectomy such as radionucleide synoviorthesis is a simple and non-invasive procedure that often delays the need for surgery which despite considerable improvement in techniques and postoperative rehabilitation remains a high-risk strategy in patients with severe haemophilia, especially those with inhibitors. In these high risk patients, availability of specific clotting factors such as activated prothrombin complex concentrate (FEIBA, Baxter, Vienna, Austria) and more recently, recombinant factor VIIa (rFVIIa, NovoSeven, Bagsvaerd, Denmark) has allowed to perform effective and safe orthopaedic procedures. The on-going EUREKA study will undoubtedly provide additional information about the optimal use of rFVIIa in this context.

Research paper thumbnail of Prevalence of motion artifact simulating aortic dissection on spiral CT using a 180 ° linear interpolation algorithm for reconstruction of the images

European Radiology, 1997

... images P. Loubeyre, F. Grozel, Y. Carrillon, Ch. Gaillard, F. Guyard, O. Pellet, VA Tran Minh... more ... images P. Loubeyre, F. Grozel, Y. Carrillon, Ch. Gaillard, F. Guyard, O. Pellet, VA Tran Minh ... distensibility? Eur J Radiol 16 (2): 107–111 7. Kalender WA, Polacin A (1991) Physical performance charac-teristics of spiral CT scanning. ...