Despite many years of clinical experience the optimal bearing choice in total hip arthroplasty (THA) remains controversial. This study aims to directly compare the three widely used bearing surfaces: metal-on-highly crosslinked polyethylene (MoHXLPE), ceramic-on-ceramic (CoC) and metal-on-metal (MoM), regarding clinical and radiologic outcome parameters. From November 1999 to November 2001, 300 primary THAs were performed using the uncemented Alloclassic Variall cup and stem (Zimmer Inc., Warsaw, Indiana). The patients were divided into three groups according to the bearing couple implanted, with 100 persons in each group (MoHXLPE, CoC, MoM). Radiographic and clinical data was collected preoperative and at the last follow-up.BACKGROUND
METHODS
