The trochanter is a bony protrusion near the upper part of the femur (thigh bone) and is where the hip and thigh muscles attach. Trochanteric advancement is done by removing the trochanter and reattaching it down the femur. Patients with a dislocated hip, a growth plate lesion or Perthes disease may undergo this procedure as it is shown to improve the biomechanics of the patient with restored hip strength.

Diagram of a trochanteric advancement procedure. The greater trochanter of the femur is moved down along the femoral shaft, changing the position of the femoral head in the acetabulum so there is more coverage.