Current Concepts of Femoroacetabular Impingement.

Femoroacetabular impingement (FAI) is a prevalent clinical syndrome and likely a primary contributor to idiopathic hip osteoarthritis. It is characterized by osseous pathomorphology in the hip that alters normal biomechanics, causing accelerated joint degeneration and characteristic patterns of chondral and labral injuries. Early intervention in well-selected patients can provide symptomatic relief and delay progression to osteoarthritis.