Figure 3.

A 15-year-old female gymnast with pain and reduced internal rotation of the left hip. A, a 3-dimensional computed tomography scan defines a pincer lesion with accompanying os acetabulum (arrow) and cam lesion (asterisk). B, as viewed from the anterolateral portal, the pincer lesion and os acetabulum (asterisk) are exposed, with the labrum being sharply released with an arthroscopic knife. C, the acetabular fragment has been removed and the rim trimmed with anchors placed to repair the labrum. D, the labrum has been refixed.