Fig. 4
a Radiograph of the right hip joint 7 years after operation in a 71-old-year man who underwent left below knee amputation with total hip arthroplasty. The radiograph shows loosening of the components around the acetabulum and proximal femur. b A Vancouver type B2 fracture with stem loosening occurred after a fall at 8 years postoperatively. c Acetabular cup and femoral stem revision was performed using a long distal-fitting and modular-type stem with additional circular wiring. d At 24 months after revision surgery, the radiograph showed bony union and stable stem fixation