An osteotomy is a surgical procedure that involves cutting and reshaping of a bone. Pelvic osteotomy involves reshaping a shallow hip socket so that it accommodates the ball of the hip joint (femoral head). Pelvic osteotomy is indicated in various hip disorders such as developmental dysplasia of the hip involving acetabular dysplasia, subluxation and dislocation, avascular necrosis of the capital femoral epiphysis (Legg-Calve-Perthes-Disease), and neuromuscular hip instability.