Fig. 3

(a, b) Pipkin type IV femoral head fracture and dislocation associated (white arrow) with a displaced femoral neck fracture (black arrow) of the right hip joint owing to an in-car traffic accident (case 34, a 47-year-old woman). (c, d) After performing surgical hip dislocation with trochanteric flip osteotomy, the femoral neck and head were fixed and compression plating was performed for the acetabular fracture. (e, f) Bone union was achieved 8 months after surgery; however, reduced blood flow (red arrow) in the femoral head was observed on single-photon emission computed tomography/computed tomography. (g, h) The patient complained of limited range of motion and pain in the right hip joint, and eventually underwent total hip arthroplasty