Finally , with use of a variety of vali date d measures , there was no difference between the two groups in terms of functional status at two , eight , and ten years , regardless of the measure used .
A less expensive all-polyethylene component as part of a total knee arthroplasty has results equivalent to those obtained with a cemented metal-backed tibial component .
BACKGROUND The cost of the implant as part of a total knee arthroplasty accounts for a substantial portion of the costs for the overall procedure : all-polyethylene tibial components cost considerably less than cemented metal-backed tibial components .
We performed a systematic review of the literature to determine whether the clinical results of lower-cost all-polyethylene tibial components were comparable with the results of a more expensive metal-backed tibial component .
A randomised controlled trial of cemented versus cementless press-fit condylar total knee replacement: 15-year survival analysis.
We report the long-term survival of a prospect i ve r and omised consecutive series of 501 primary knee replacements using the press-fit condylar posterior cruciate ligament-retaining prosthesis .  Patients received either cemented ( 219 patients , 277 implants ) or cementless ( 177 patients , 224 implants ) fixation . Altogether , 44 of 501 knees ( 8.8 % ) underwent revision surgery ( 24 cemented vs 20 cementless ) . For cemented knees the 15-year survival rate was 80.7 % ( 95 % confidence interval ( CI ) 71.5 to 87.4 ) and for cementless knees it was 75.3 % ( 95 % CI 63.5 to 84.3 ) . There was no significant difference between the two groups ( cemented vs cementless ; hazard ratio ( HR ) 0.83 , 95 % CI 0.45 to 1.52 , p = 0.55 ) . When comparing the covariates there was no significant difference in the rates of survival between the side of operation ( HR 0.58 , p = 0.07 ) , age ( HR 0.97 , p = 0.10 ) and diagnosis ( HR 1.25 p = 0.72 ) . However , there was a significant gender difference , with males having a higher failure rate with cemented fixation ( HR 2.48 , p = 0.004 ) . Females had a similar failure rate in both groups . This single-surgeon series , with no loss to follow-up , provides reliable data of the revision rates of one of the most commonly-used total knee replacements . The survival of the press-fit condylar total knee replacement remained good at 15 years , irrespective of the method of fixation
Finally , with use of a variety of vali date d measures , there was no difference between the two groups in terms of functional status at two , eight , and ten years , regardless of the measure used .
A less expensive all-polyethylene component as part of a total knee arthroplasty has results equivalent to those obtained with a cemented metal-backed tibial component .
BACKGROUND The cost of the implant as part of a total knee arthroplasty accounts for a substantial portion of the costs for the overall procedure : all-polyethylene tibial components cost considerably less than cemented metal-backed tibial components .
We performed a systematic review of the literature to determine whether the clinical results of lower-cost all-polyethylene tibial components were comparable with the results of a more expensive metal-backed tibial component .