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 randomized controlled trial comparing "high-flex" vs "standard" posterior cruciate substituting polyethylene tibial inserts in total knee arthroplasty.
The purpose of this study is to compare the range of motion and clinical outcomes of a st and ard posterior-stabilized ( PS ) vs the high-flex ( HF ) polyethylene tibial insert of a posterior cruciate substituting total knee arthroplasty system . One hundred patients were entered into a prospect i ve , blinded , r and omized clinical trial in which 50 patients received a Genesis II PS insert and 50 patients received a Genesis II HF insert ( Smith & Nephew , Memphis , TN ) . At an average follow-up of 2.7 years ( range , 2.3 - 3.1 years ) , there were no differences in any outcome measures ( Western Ontario and McMaster Universities osteoarthritis index , Short-Form 12 , Knee Society clinical rating scores , anterior knee pain ) . There were no differences ( P = .811 ) in average knee flexion at 2 years ( st and ard , 123 degrees + /- 7 degrees ; HF , 124 degrees + /- 7 degrees ) . In summary , this prospect i ve blinded r and omized clinical trial demonstrated no differences between a PS and HF polyethylene design . Long-term evaluation will be required to comment on differences in polyethylene wear and implant longevity
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 .