Hip impingement pain: Femoroacetabular impingement encompasses a constellation of problems about the hip joint that cause pain with combined hyperflexion and internal rotation. Pain results from the hip bone impinging upon the rim of the acetabulum. Either a prominence of bone on the femoral head-neck junction (Cam lesion) or on the acetabular rim (pincer lesion) and labral tear are noted at surgery when indicated.
Answered 10/18/2015
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