Bioball universal modular neck adapter as a salvage for failed revision total hip arthroplasty
A 62 year old male had cemented THA for idiopathic avascular necrosis, but started to have progressively increasing pain and limping 3 months after the surgery. The X-rays confirmed early and severe osteolysis. This hip was revised by using a fully coated stem []. The stem showed subsidence in 4 months time [], despite keeping the patient nonweight bearing for 2 months on crutches. It was managed successfully using the bioball adapter [], with no incidence of re-dislocation at 1.5 years followup. There was no trochanteric pain or thigh pain.