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Surgical step 4. Exposure of the anterior inferior iliac spine (AIIS) and outer table of the pelvis. Just adjacent to the AIIS is where the docking site of the graft is prepared. This 2-cm × 2-cm area is decorticated with an oscillating saw until bleeding bone is visualized. The figures depicting the surgical procedure are in a supine position, on a left hip. Proximal, distal, medial, and lateral are the top, bottom, left, and right of the image, respectively.
