CORR Insights^®: Acetabular Version Increases After Closure of the Triradiate Cartilage Complex

Excerpt

Femoroacetabular impingement (FAI) is a common hip condition that has been associated with development of early osteoarthritis of the hip [3]. A recent systematic review of 26 studies comprising 2114 asymptomatic individuals reported a prevalence of a cam deformity of 37% and a prevalence of a pincer deformity of 67% [2]. Although most investigators have agreed on a reasonably consistent method for defining a cam deformity, there remains poor consensus on the definition of a pincer deformity [2], with several suggesting it may be defined too broadly [1, 8]. Primary FAI is generally accepted to be developmental in nature, although specific pathogenic mechanisms remain unclear. Cam deformities clearly are more prevalent in athletes than in the general population [2], and recent research has suggested their development may be associated with vigorous or specific sporting activities during adolescence [5, 9, 10]. Considerably less is known about the development of pincer lesions, in part because of the lack of uniformity in their definition. …