Postero-lateral rotatory instability in osteoarthritis of the knee.

Rotatory instability is well recognized following trauma to the knee, but it may also be seen in degenerative disease. The presence of chronic instability may affect the results of operative treatment of the osteoarthritic knee, as has been shown with postero-lateral rotatory instability in patients with varus deformity secondary to osteoarthritis. Recognition of these often subtle clinical entities is essential in order to improve patient selection when considering the various options for operation.

[Carpo-metacarpal dislocation of the 5th digit with fracture of the hamate bone. Apropos of a recent case].

The authors report one case of recent fracture of the hamate with dorsal dislocation of the fifth metacarpal. This type of lesion is infrequent and may be misdiagnosed unless appropriate radiographs are taken with oblique views. The lesion was not stable after closed reduction and required fixation with a pin through the hamate fracture.

High tibial osteotomy for varus gonarthrosis. A long-term follow-up study.

We evaluated the results in eighty-three patients (ninety-five knees) who had had a high tibial osteotomy for either unicompartmental osteoarthritis or osteonecrosis. The operations were performed between 1965 and 1976. The mean length of follow-up was 8.