BACKGROUND Femoroacetabular impingement (FAI) is increasingly recognized as a potential cause of hip osteoarthritis. A system capable of pre-operatively simulating hip range of motion (ROM) by given surface models from either healthy or FAI diseased bone is desirable. METHODS An impingement detection system using bounding sphere hierarchies was first developed. Both precision and accuracy of ...

Although femoroacetabular impingement (FAI) syndrome is included in the etiology of lesions involving the acetabular labrum and acetabular cartilage, it is one of many possible reasons behind osteochondral lesions in the femoral head. Herein, we present clinical findings and outcomes of two cases with osteochondral defects and cam type impingement of femoral head. Both cases underwent autologou...

©2005 British Editorial Society of Bone and Joint Surgery doi:10.1302/0301-620X.87B11. 16821 $2.00 J Bone Joint Surg [Br] 2005;87-B:1459-62. Secondary osteoarthritis of the hip occurs due to a known precipitating cause. In primary or idiopathic osteoarthritis the cause remains unknown although some studies 1,2 have suggested that femoroacetabular impingement (FAI) may be responsible for the pro...