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Mobile-Bearing Total Knee Arthroplasty

2010; Elsevier BV; Volume: 26; Issue: 4 Linguagem: Inglês

10.1016/j.arth.2010.05.015

1532-8406

Joshua T. Carothers, Raymond H. Kim, Douglas A. Dennis, Carleton Southworth,

Knee injuries and reconstruction techniques

Abstract An extensive database search was completed to perform a meta-analysis of outcomes of mobile-bearing total knee arthroplasty. Nineteen manuscripts encompassing 3506 total knee arthroplasty met criteria for analysis (average follow-up, 8.6 years). Data were subdivided based on design type and included rotating platform, meniscal bearing, and anterior-posterior glide-rotation subgroups. Fifteen-year survivorship of rotating platform designs (96.4%) was greater than meniscal bearing implants (86.5%). Mean component loosening (0.33%) and bearing instability ( 1%) for all subgroups were uncommon. Implants placed prior to 1995 exhibited higher rates of bearing complications (1.6% vs 0.1%). Excellent results were obtained with mobile-bearing TKA over 2 decades. Loosening and bearing instability were uncommon. Bearing complications lessened after 1995, possibly secondary to improved surgical technique.