Fig. 5

Anteroposterior radiographs of a 79-year-old man who underwent primary total hip arthroplasty (THA) 2 years ago. A: Three months after surgery, the patient experienced recurrent dislocation caused by soft tissue imbalance resulting from the posterior approach (type II). B: Because of insufficient tension in the soft tissue, a constrained cup was used for reversion. It has now been 4 years since the revised THA (Group F)