Peroperative effect of fenestration upon intraosseous pressure in patients with osteoarthritis of the hip.

In nine patients with osteoarthritis of the hip who suffered from pain at rest, intraosseous pressure was measured in both the femoral head and neck before and immediately after fenestration in the lateral aspect of the greater trochanter. A small but significant drop in intraosseous pressure in both the femoral neck and head was registered as a result of the fenestration procedure.