Modified Kocher approach as described by Gibson. Greater trochanter is dotted line. ADE is the Kocher-Langenbeck incision. BDE is Gibson’s original incision. CDE is Moed’s modification of the approach. (Redrawn from Moed BR: The modified Gibson posterior surgical approach to the acetabulum, J Orthop Trauma 24:315, 2010.) SEE TECHNIQUE 1.80.