Anterior femoroacetabular impingement: a diverse disease with evolving treatment options.

Anterior femoroacetabular impingement (FAI) is a major etiologic factor in the pathogenesis of hip arthritis. In this condition, mechanical abnormalities of the hip joint lead to early hip dysfunction, inflammation, cartilage injury, and eventual joint degradation. FAI is now more commonly diagnosed and there is an increasing need for a thorough understanding of the broad spectrum of clinical presentation for the disease as well as more precise definition of the possible surgical options.