Subspine impingement of the hip

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Subspine impingement of the hip is a type of extra-articular hip impingement, also known as anterior inferior iliac spine impingement. This condition occurs when a low-lying or enlarged anterior inferior iliac spine contacts the femoral neck with hip flexion. Presenting symptoms of this condition may mimic femoroacetabular impingement (cam- or pincer-type).