Three standard portals are used for this portion of the procedure (Fig. 3). Two of these (anterolateral and posterolateral) are placed laterally over the superior margin of the greater trochanter at its anterior and posterior borders. The anterior portal is placed at the site of intersection of a sagittal line drawn distally from the anterior superior iliac spine and a transverse line across the tip of the greater trochanter. With careful orientation to the landmarks in relation to the joint, these portals are placed at a safe distance from the surrounding major neurovascular structures  (Fig. 4 and Table 1).
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