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 .
The Effect of Femoral Head Size on Functional Outcome in Primary Total Hip Arthroplasty: A Single-Blinded Randomised Controlled Trial
We conducted a prospect i ve single-blinded r and omised controlled trial to compare the functional and quality of life outcomes in two groups of patients between 60 and 80 years of age undergoing THR ; the first receiving a small head ( 28–32 mm ) metal on polyethylene ( MoP ) articulation , and the second receiving a large head ( 44–54 mm ) metal on metal ( MoM ) articulation .  We recruited 49 patients and r and omised them into one of the two groups ( 22 MoP and 27 MoM ) . The results demonstrated no statistical difference in any of the assessed functional outcomes at any follow-up point ( p>0.05 ) . There were no dislocations or revisions in either group . Although it has been suggested that large head MoM articulations in THA offer superior stability and function , our results suggest that small head MoP articulations can achieve comparable ROM , function and quality of life at short-term 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 .