92 patients were randomized to evaluate the outcomes of total hip arthroplasty with either ceramic-on-ceramic or ceramic-on-[highly-crosslinked-polyethylene] bearings. Patients were allocated to receive either articulation type, and were followed-up for 5 years. The results indicated that groups did not significantly differ, and both groups experienced significant improvement in pain, function, stiffness and health status one year following surgery that was maintained until final assessment at 5 years. There was also no difference between groups for complication/revision rate.