Dislocation of the Patella appears to be rare and is almost always to the lateral not to the medial side.
1) Three cases of traumatic lateral subluxation are described. In one of these underdevelopment of the lateral femoral condyle is presented. There was no history of injury. In all cases the knee was immobilized for 3 weeks with a plaster splint.
2) Two cases of recurrent dislocation is presented. Tavernier's technique for a boy and Campbell's technique for a girl were practiced.
When five cases were last seen from three to fourteen months after treatment the patella was stable and flexion of the knee full.