Femoroacetabular impingement: an overlooked cause of hip pain.

Femoroacetabular impingement is a cause of hip pain arising from abnormal contact between the proximal femur and the acetabulum during terminal hip motion. This is caused by a structural abnormality at the femoral head/neck junction or the acetabulum. The problem usually presents in young adults and can often go undiagnosed for years. Failure to identify and properly restore the biomechanics has been hypothesized to lead to the early onset of hip osteoarthritis; thus, early recognition is important. In this case study, we report on a 31-yr-old patient with many years of bilateral hip pain who underwent successful treatment of bilateral femoroacetabular impingement.