Hill-Sachs type lesion of the femoral head in a case of hip instability

A Hill-Sachs lesion of the shoulder is an indicator of shoulder instability . Hip instability is also a well-recognized phenomenon. However, no operati ve or arthroscopic features have previously been reported that support the diagnosis of hip instability. We present a case report of a Hill-Sachs type lesion of the femoral head in a patient with acetabular dysplasia revealed by arthroscopy of the hip. We suggest that finding a Hill-Sachs type lesio n of the femoral head may also be regarded as indicative of joint instabili ty, just as it is in the shoulder.