<prompt> Late complication of Acetabular fractureAvascular necrosis of lilac crestAvascular necrosis of head of femurFixed deformity of the hip jointSecondary osteoarthritis of hip joint  <response>: Avascular necrosis - osteonecrosis of the femoral head may occur even if the hip is not fully dislocated. The condition is probably overdiagnosed because of an erroneous interpretation of x-ray appearance following impacted marginal fractures of the acetabulum.Other complications : iliofemoral venous thrombosis sciatic nerve injury heterotopic bone formation loss of joint movement secondary osteoarthritis 