The present evidence indicated the similar performance in survivorship among CoC , CoPc , CoPxl and MoPxl bearing implants , and that all likely have superiority compared with the MoM and MoPc bearing implants in THA procedures .
PURPOSE Although many  total hip bearing implants  are widely used all over the world , simultaneous comparisons across the numerous available bearing surfaces are rare .
The purpose of this study was to compare the survivorship of total hip arthroplasty ( THA ) with six available bearing implants .
A double-blind, prospective, randomized controlled trial comparing highly cross-linked and conventional polyethylene in primary total hip arthroplasty.
Highly cross-linked polyethylene was developed to reduce articular bearing wear in total hip arthroplasty . In vitro studies have shown reduced wear in comparison with conventional polyethylene . A double-blind , prospect i ve , r and omized trial was performed comparing highly cross-linked and conventional polyethylene  in 119 patients . The primary outcome variables were linear , 3-dimensional , and volumetric wear as determined by analysis of digitized radiographs using vali date d wear measurement software . Linear , 3-dimensional , and volumetric wear rates were significantly less in the highly cross-linked polyethylene group between 6 months and 4 years postoperatively ( P < .05 ) . The data presented here show that highly cross-linked polyethylene reduces short-term polyethylene wear . The intermediate and long-term clinical results of highly cross-linked polyethylene remain unknown pending further follow-up
The present evidence indicated the similar performance in survivorship among CoC , CoPc , CoPxl and MoPxl bearing implants , and that all likely have superiority compared with the MoM and MoPc bearing implants in THA procedures .
PURPOSE Although many  total hip bearing implants  are widely used all over the world , simultaneous comparisons across the numerous available bearing surfaces are rare .
The purpose of this study was to compare the survivorship of total hip arthroplasty ( THA ) with six available bearing implants .