Figure 5.

A, a capsulotomy performed by connecting the anterior and anterolateral portals is necessary for the instruments to pass freely from the central to peripheral compartment as the traction is released and the hip flexed. B, with the hip flexed, the anterolateral portal is now positioned along the neck of the femur. A cephalad (proximal) anterolateral portal has been placed, and the original anterior and posterolateral portals have been removed. These 2 portals allow access to the entirety of the cam lesion in most cases. Their position also allows an unhindered view with the c-arm.