Rank probabilities for survivorship among different bearing implants including trials with at least 10 years follow-up period. MoPc = metal-on-conventional polyethylene, MoPxl = metal-on-highly crosslinked polyethylene, CoPc = ceramic-on-conventional polyethylene, CoPxl = ceramic-on-highly crosslinked polyethylene, CoC = ceramic-on-ceramic, MoM = metal-on-metal.