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Review
. 2015 Sep;27(3):141-8.
doi: 10.5792/ksrr.2015.27.3.141. Epub 2015 Sep 1.

Outcome of Unicompartmental Knee Arthroplasty: A Systematic Review of Comparative Studies between Fixed and Mobile Bearings Focusing on Complications

Young-Bong Ko  1 , Manan Ramesh Gujarathi  1 , Kwang-Jun Oh  1
Affiliations
Review

Outcome of Unicompartmental Knee Arthroplasty: A Systematic Review of Comparative Studies between Fixed and Mobile Bearings Focusing on Complications

Young-Bong Ko et al. Knee Surg Relat Res. 2015 Sep.

Abstract

The purpose of this systematic review is to collate results of studies comparing fixed and mobile bearing unicompartmental knee arthroplasty (UKA), focusing on complications and timing for reoperations. Out of 723 results derived from PubMed, EMBASE and Cochrane database search engines on bearings in arthroplasty, 10 studies comparing clinical results of fixed bearings to mobile bearings in UKA were found eligible for analysis. The reoperation rate was calculated using a novel method such as reoperations per hundred component years, and the causes of specific reoperations were investigated. The overall reoperation rate per hundred component years was similar between the mobile bearings (1.392) and fixed bearings (1.377); however, mobile bearings were more susceptible to reoperations in cases with aseptic loosening (0.393>0.255), progression of arthritis (0.428>0.357) and implant dislocation (0.286>0). The overall incidence of complications is similar for fixed and mobile bearing designs in UKA. The discussion on complications presented above may assist surgeons in their choice of bearing design.

Keywords: Knee; Postoperative complications; Prosthesis failure; Unicompartmental arthroplasty.

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Conflict of interest statement

Conflict of Interest: No potential conflict of interest relevant to this article was reported.

Figures

Fig. 1
Fig. 1. Flowchart for the identification of eligible studies. TKA: total knee arthroplasty, UKA: unicompartmental knee arthroplasty.
See this image and copyright information in PMC

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