We have operated total knee arthroplasty in a patient with bilateral congenital dislocation of the patella treated with a different method in each knee.

OBJECTIVE To evaluate the approaches and procedures used by knee surgeons in Brazil for treating medial patellofemoral lesions (MPFL) of the knee in cases of acute traumatic dislocation of the patella. MATERIALS AND METHODS A questionnaire comprising 15 closed questions on topics relating to treating MPFL of the knee following acute dislocation of the patella was used. It was applied to Brazi...

We report on a 12 year old mentally retarded boy who presented at birth with bilateral knee dislocations, dislocation of the right hip, and general joint laxity. Cytogenetic studies showed a 49,XXXXY karyotype. Hyperlaxity of joints is known to occur in 49,XXXXY patients, but congenital knee dislocation has not been reported. Rarely in 49,XXXXY and 49,XXXXX syndromes Larsen-like features may be...

Dislocation of revision total knee arthroplasty is a very rare, serious and difficult complication. Incidence of significant instability and dislocation following primary TKA ranged from 1% to 2% in the past ten years. This incidence has been lowered to 0.15% to 0.5% with the development of modern surgical techniques and posterior stabilized implants. It is very few reports have been published ...

In a chart review 31 traumatic knee dislocations were identified in 30 patients during an eight year period (1992-2000).Fifteen dislocations (48.4%) were posterior,seven anterior,eight occult and one medial.out of the five cases of vascular injuries three happened with posterior dislocations and in four patients associated ipsilateral limb injuries were present .the general incidence of simulta...

Superior dislocation of the patella is a rare diagnosis. A 72 year old woman attended the accident and emergency department of the hospital with a painful right knee after a knock to the knee. Clinical examination and radiographs confirmed a superior dislocation of the patella, which was reduced and closed with the aid of simple analgesia. The authors present the case report and discuss the rel...

We are reporting a case of traumatic anterior dislocation of the left knee without any neurovascular complication. To our knowledge, such complete dislocation without involvement of popliteal artery and/or peroneal nerve has not been reported before however similar cases are reported after total knee replacement with and without neurovascular compromise. This injury was recognized and treated p...

Magnetic resonance imaging was used to analyse the patellofemoral relationships during the first 3O’ of knee fiexion in women with recurrent patellar dislocation. The patellofemoral joints were imaged both sagittally and axially with the knee flexed O , 1O , 200, and 3 O At the beginning of knee flexion the sulcus angle was greater than in unaffected women, the lateral patellofemoral angle was ...

Superior dislocation of the patella is a rare diagnosis. A 72 year old woman attended the accident and emergency department of the hospital with a painful right knee after a knock to the knee. Clinical examination and radiographs confirmed a superior dislocation of the patella, which was reduced and closed with the aid of simple analgesia. The authors present the case report and discuss the rel...

The Bisurface knee prosthesis (BP) has a posterior stabilising cam (ball-and-socket joint) in the mid-posterior region of the femorotibial joint in an attempt to improve the range of movement. Based on an in vitro weight-bearing study contact areas of the Insall/Burstein 2 (IB2) and the BP knee were compared using pressure-sensitive films. The stability afforded by the cam was evaluated by mean...