The acetabular labrum is a rim of cartilage surrounding the socket of the hip joint. Damage to the labrum can result from various causes, including trauma and degeneration. Labral tears can be painful, but also may be found incidentally on imaging studies. Femoroacetabular impingement is a clinical syndrome associated with labral tears. This syndrome is characterized by bony overgrowth of either the femur, the pelvis or both (Figure 1). These morphological abnormalities are thought to produce (or at least reflect) abnormal contact between the proximal femur and acetabulum during hip flexion and rotation. It has been proposed that this contact damages the labrum as well as the articular cartilage of the hip joint itself.
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