Fig. 1

(a) Pipkin type IV femoral head fracture and dislocation of the right hip joint owing to an in-car traffic accident (case 14, a 36-year-old man). (b) Surgical hip dislocation was performed using the modified Gibson approach. The femoral head fracture was reduced using pointed reduction forceps; fixation was performed using 2.7-mm cortical screws. (c, d) Stable fixation was achieved, and good congruence of the femoral head was found to be maintained on postoperative radiography. (e, f) Bone union was achieved 8 months after surgery, and (g, h) blood supply to the femoral head was found to be well maintained on single-photon emission computed tomography/computed tomography, and the patient fully recovered range of motion