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 .
New polyethylenes in total hip replacement: A ten- to 12-year follow-up study.
Between 1999 and 2001 , 90 patients underwent total hip replacement using the same uncemented acetabular and femoral components  with a 28 mm metallic femoral head but with prospect i ve r and omisation of the acetabular liner to either Durasul highly cross-linked polyethylene or nitrogen-sterilised Sulene polyethylene . We assessed 83 patients at a minimum follow-up of ten years .  Linear penetration of the femoral head was estimated at six weeks , six and 12 months and annually thereafter , using the Dorr method , given the non-spherical shape of the acetabular component . There was no loosening of any component ; only one hip in the Sulene group showed proximal femoral osteolysis . The mean penetration of the femoral head at six weeks was 0.08 mm ( 0.02 to 0.15 ) for the Durasul group and 0.16 mm ( 0.05 to 0.28 ) for the Sulene group ( p = 0.001 ) . The mean yearly linear penetration was 64.8 % lower for the Durasul group at 0.05 mm/year ( sd 0.035 ) for the Sulene group and 0.02 mm/year ( sd 0.016 ) for the Durasul ( p < 0.001 ) . Mean linear femoral head penetration at ten years was 61 % less in the Durasul than Sulene group . Highly cross-linked polyethylene gives excellent results at ten years
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 .