A randomised controlled trial of the clinical effectiveness and cost-effectiveness of different knee prostheses: the knee arthroplasty trial (KAT)

Source:  Health Technology Assessment 2014, 18(19)

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Date of publication:  March 2014

In a nutshell:  the Knee Arthroplasty Trial examined the clinical effectiveness and cost-effectiveness of four aspects of knee replacement surgery: patellar resurfacing, mobile bearings, all-polyethylene tibial components and unicompartmental replacement.  A total of 116 surgeons in 34 centres participated and 2352 participants were randomised: 1715 in patellar resurfacing; 539 in mobile bearing; 409 in all-polyethylene tibial component; and 34 in the unicompartmental comparisons. Of those randomised, 345 were randomised to two comparisons.  The results provide evidence to support the routine resurfacing of the patella and the use of metal-backed tibial components even in the elderly.

Length of publication:  235 pages

Acknowledgement:  Health Technology Assessment

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