Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12891-018-2385-z/MediaObjects/12891_2018_2385_Fig4_HTML.png)
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