Figure 8.
Hip center and horizontal center restoration. A and B: 18-year post-operative bipolar arthroplasty with right hip pain due to acetabular erosion. Proximal migration, shortening, and loss of horizontal offset; C and D: 2-year follow-up of right hip conservative revision –acetabular component implantation with impaction bone grafting. Horizontal and vertical offsets were restored with a good functional outcome.
