Abstract
1. Thirty cases of stiff knee treated by the operation of quadricepsplasty are reviewed.
2. The causes and morbid anatomy are analysed. The operative technique is based on an appreciation of the latter.
3. The after-care must be meticulous and prolonged. Manipulation under anaesthesia was used after operation in over half the cases.
4. The results were most gratifying. There were two technical failures but in the remaining twenty-eight cases the average gain of fiexion was 68 degrees. In twenty-one of these active extension was full and it was only 5 degrees short in another three. Permanent loss of active extension occurred when the rectus femoris tendon had to be divided or lengthened.
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