Fig. 2

A Intraoperative image showing the location of the femoral neck (yellow dotted line) and the liner before release. B Intraoperative image showing the location of the greater trochanter and the liner after release at the greater trochanter. The posterior edge of the greater trochanter is located behind the liner (L) at a position of external rotation, adduction, and extension of the hip joint. C Intraoperative image showing the high edge of the liner, which decreases the space between the acetabulum and the femoral neck by 10 mm. D Intraoperative image showing an iatrogenic injury of the TFL. A, aspirator; BH, bone hook; Ca, capsule; GT, greater trochanter; L, liner; R, ruler; RE, retractor