["Isolated" injury of the posterior cruciate ligament. Surgical treatment of isolated posterior cruciate ligament tears: a multicentric retrospective study of 103 patients]. / Traitement chirurgical d'une rupture isolée du ligament croisé postérieur: résultats d'une série rétrospective multicentrique de 103 patients.

PURPOSE OF THE STUDY: We present a retrospective multicentric series of carefully selected patients presenting "isolated" laxity of the posterior cruciate ligament. MATERIAL AND METHODS: The series included 103 patients who were reviewed clinically (with a dedicated review chart) and radiographically with measurement of posterior laxity (Telos 15 kg). RESULTS: In these patients with an isolated injury of the PCL (without associated injury of the peripheral ligament) DISCUSSION: The short follow-up of this series (four years) does not enable an assessment of the risk or benefit of PCL ligamentoplasty for arthrosic knees.

[Magnetic resonance imaging of the knee. 3 cases of pigmented villonodular synovitis]. / Imagerie par résonance magnétique du genou. 3 cas de synovite villonodulaire pigmentée.

Pigmented villonodular synovitis is a benign monoarticular synovial proliferative disorder. Three cases involving the knee are reported. MR signs are highly suggestive: --joint effusion (blood); --hypointense synovial proliferation (irregular infrapatellar fat pad sign; hemosiderin deposits); --no loss of joint space. Diagnosis by MR Imaging is early, accurate and atraumatic.

[Evaluation of the sensitivity of bone scintigraphy and bone function tests for the diagnosis of aseptic osteonecrosis of the femur head in adults]. / Evaluation de la sensibilité de la scintigraphie osseuse et de l'exploration fonctionnelle de l'os pour le diagnostic de l'ostéonécrose aseptique de la tête fémorale chez l'adulte.

From 300 cases of primary osteonecrosis of the femoral head, proven histologically, the authors report: in 154 cases where a bony scintigraphy of the pelvis was performed, a definite hyperfixation is demonstrated 128 times (sensitivity of 83.1 per cent); in 104 cases where a functional exploration of the hip was performed, a hyperpressure was established 101 times (sensitivity of 97 per cent); in 84 cases, both examinations were performed. Most of the time (71 times), it concerns patients presenting few or no radiological signs: the sensitivity of scintigraphy is only 69 per cent when the sensitivity of functional exploration remains at 96.4 per cent. The authors report, in addition, that bony scintigraphy may be at fault when there is, histologically, an isolated reticular oesinophilic necrosis of the bone marrow.