Femoroacetabular impingement: what is its link with osteoarthritis? Rintje Agricola,1 Harrie Weinans2,3 IT WAS OSTEOARTHRITIS THAT DISCOVERED FEMOROACETABULAR

That morphological abnormalities of the hip could be a cause rather than a result of osteoarthritis (OA) was observed many years before the actual mechanism of femoroacetabular impingement (FAI) was described. Morphological abnormalities, currently termed as cam and pincer, were often present in people with hip OA. Ganz et al1 first described how these morphological abnormalities may cause intra-articular hip damage by a motion-dependent process called FAI. EPIDEMIOLOGICAL STUDIES Although FAI is a motion-dependent process, valid techniques to quantify th