[Femoral head osteonecrosis: original extra-articular cementoplasty technique. A series of 20 cases].
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Bone Cements↗
Biomedical subjects
F Bresler
Publications and source records attributed to F Bresler.
Assessment of the superior labrum of the shoulder joint with CT-arthrography and MR-arthrography: correlation with anatomical dissection.
The ability to detect and categorize SLAP (Superior Labrum Anterior to Posterior) lesions of the scapular labrum is of practical importance to the orthopedic surgeon and the radiologist. The aim of this study, performed on cadaveric shoulders, was to determine whether CT arthrography or MR arthrography is able to show normal anatomical variation of the glenoid labrum and detect labral abnormalities. CT arthrography, MR arthrography followed by anatomical dissection were performed on twenty three fresh frozen cadaveric shoulders and analysed by a radiologist and two orthopaedic surgeons. As Gadolinium intra-articular injection is not allowed in France, we used an iodinated contrast media for both MR arthrography and CT arthrography. In this study, the sensitivity of MR arthrography seemed higher than CT arthrography (respectively 4 and 3 labral lesions diagnosed out of five), although no significant statistical conclusions can be made due to the small number of cases. In conclusion, under such specific conditions, MR arthrography seems to be the method of choice for the detection and classification of labral lesions.
Aged↗
Digital image analysis of bone allograft union in sheep.
We compared the reliability of computer-assisted radiographic analysis (CARA) and visual evaluation of radiographs to assess host-graft junctions. 68 host bone/allograft junctions were obtained from an ongoing study on bone allografting in sheep. At 6 months, the grafted tibias were explanted and healing of the host-graft junctions were macroscopically determined. 49 junctions were macroscopically healed, whereas 19 had not united. 51 (0.8) of the junctions were correctly classified by radiographs, while 63 (0.9) of the junctions were correctly classified by CARA (p = 0.03). These findings warrant further evaluation in a clinical setting.
Animals↗
Cervical cord compression complicating atlantoaxial subluxation in ankylosing spondylitis.
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Atlanto-Axial Joint↗
[Value of calculation of the kappa coefficient in the evaluation of an imaging method].
Radiologists are often confronted to the choice of the most appropriate statistic tool for evaluating diagnostic imaging methods. Using a radiological literature example, the Kappa agreement test is herein described and its applications are determined. Although widely performed to determine the inter-rater agreement, this test is also suited for the confrontation of two or more diagnostic imaging methods applied on the same subjects and providing categorical data. It procures the degree of agreement between the different methods.
Angiography↗
[Tibiotalar arthrodesis under arthroscopy].
PURPOSE OF THE STUDY: The authors describe an arthroscopic technique of tibio-talar arthrodesis. They discuss the advantages, indications and results of this technique. MATERIAL: Seven arthroscopic tibio-talar arthrodeses (A.T.T.A.) were performed between may 1992 and september 1993 for post traumatic arthritis (five following bimalleolar fractures, two following talar fractures). METHOD: Traction by means of a transcalcaneus pin was applied to obtain articular distraction. Arthroscopic debridement was performed using two standard anterolateral and anteromedial portals. The arthrodesis was secured in neutral position by two percutaneous tibio talar cannulated cancellous screws. RESULTS: Fusion was obtained in all cases over an average period of 12 weeks. No infections or cutaneous complications were noted. In one case, however, screw positioning caused an injury to a branch of the superficial peroneal nerve. At last follow-up, according to the Duquennoy grading system, the results were good or very good. DISCUSSION: In this study, we noticed a particularly low rate of complications, a significantly lesser recovery time and a higher fusion rate compared to open ankle arthrodesis techniques. This is probably due to the careful handling of the periarticular soft tissues, possible with the arthroscopic procedure. The best indication for this procedure seems to be "centered" ankle arthritis. However, a significant deviation in one plane, or a tibial or talar bone loss needing an autogenous graft is considered to be a contra-indication for the procedure. CONCLUSION: A.T.T.A. seems to be a simple and reliable technique for centered ankle arthritis.
Adult↗
[Long-term results of 2 uncemented acetabular cup components in total hip prosthesis].
We have followed up 227 total hip replacements using a cementless minimadreporic prosthesis for an average of 9 1/2 years. Special attention was paid to the acetabular component, of which 2 types were used; 77 incorporated screw rings and 134 were stabilised by spikes. The screw prostheses were evaluated at an average of 8 1/2 years from operation; one third showed radiological evidence of migration, and revision because of this was required in 12.6% of cases. The spiked cups were followed up for an average of 10 years; 14.8% showed radiological evidence of migration and 2.3% needed revision. We observed no radiological features to explain this difference. The quality of the bone and the mechanical characteristics of the bone/implant contrast may influence the result. We feel that an uncemented spiked acetabular implants is a worthwhile concept.
Acetabulum↗
[Arthrodesis of the ankle joint: effect of the position of the arthrodesis on the foot. Apropos of a series of 50 cases reviewed with an average follow-up of 9 years].
UNLABELLED: A functional assessment of fifty patients after ankle arthrodesis for post traumatic arthritis was carried out by means of an extensive clinical evaluation after an average follow-up of nine years. The data on position of ankle arthrodesis and gait analysis were examined to determine the effect of arthrodesis of the ankle on the subtalar and small joints of the foot. The Duquennoy point system was used to grade the ankle clinically and a new radiological method to determine the sagittal position of the ankle arthrodesis was developed. Equinus position was related with clinical damage on sub talar joint, and anterior cavus foot (92.8 per cent). This position was related with metatarsalgia in 26.9 per cent. Calcaneus position was related with posterior cavus foot (verticalization of the calcaneus). This position was related with the best functional results on walking, jumping and running. CLINICAL RELEVANCE: this study has showed that the ideal position of fusion of the ankle was neutral or slight flexion, slight valgus angulation of the hind part of the foot and 10 degrees of external rotation.
Adult↗