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J Knee Surg 2015; 28(05): 358-362
DOI: 10.1055/s-0035-1550338
Special Focus Section
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Fixed Bearings versus Rotating Platforms in Total Knee Arthroplasty

Peter B. White
1   Department of Othopedics, Hospital for Special Surgery, New York, New York
,
Amar S. Ranawat
1   Department of Othopedics, Hospital for Special Surgery, New York, New York
,
Chitranjan S. Ranawat
1   Department of Othopedics, Hospital for Special Surgery, New York, New York
› Author Affiliations
Further Information

Publication History

12 February 2015

26 February 2015

Publication Date:
05 May 2015 (online)

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Abstract

Rotating platforms were introduced as an alternative to fixed bearings in hopes of providing more natural kinematics and improved clinical outcomes. In-vitro wear studies showed significantly less wear with rotating platforms as opposed to fixed-bearing designs. Kinematic follow-up studies showed significantly improved axial rotation with rotating-platform knees. However, these benefits have failed to translate into improved clinical outcomes or survivorship. This article reviews our institution's experience, as well as the latest clinical research on wear, kinematics, clinical outcomes, and survivorship of fixed-bearing and rotating-platform knees.

Keywords

fixed bearing - rotating platform - total knee - TKA
 

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