Alumina-on-alumina total hip replacement for femoral neck fracture in healthy patients

BACKGROUND Total hip replacement is considered the best option for treatment of displaced intracapsular fractures of the femoral neck (FFN). The size of the femoral head is an important factor that influences the outcome of a total hip arthroplasty (THA): implants with a 28 mm femoral head are more prone to dislocate than implants with a 32 mm head. Obviously, a large head coupled to a polyethylene inlay can lead to more wear, osteolysis and failure of the implant. Ceramic induces less friction and minimal wear even with larger heads. METHODS A total of 35 THAs were performed for displaced intracapsular FFN, using a 32 mm alumina-alumina coupling. RESULTS At a mean follow-up of 80 months, 33 have been clinically and radiologically reviewed. None of the implants needed revision for any reason, none of the cups were considered to have failed, no dislocations nor breakage of the ceramic components were recorded. One anatomic cementless stem was radiologically loose. CONCLUSIONS On the basis of our experience, we suggest that ceramic-on-ceramic coupling offers minimal friction and wear even with large heads.