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The Bone & Joint Journal

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The Bone & Joint Journal
Vol. 103-B, Issue 7 | Pages 1261 - 1269
1 Jul 2021
Burger JA Zuiderbaan HA Sierevelt IN van Steenbergen L Nolte PA Pearle AD Kerkhoffs GMMJ

Aims

Uncemented mobile bearing designs in medial unicompartmental knee arthroplasty (UKA) have seen an increase over the last decade. However, there are a lack of large-scale studies comparing survivorship of these specific designs to commonly used cemented mobile and fixed bearing designs. The aim of this study was to evaluate the survivorship of these designs.

Methods

A total of 21,610 medial UKAs from 2007 to 2018 were selected from the Dutch Arthroplasty Register. Multivariate Cox regression analyses were used to compare uncemented mobile bearings with cemented mobile and fixed bearings. Adjustments were made for patient and surgical factors, with their interactions being considered. Reasons and type of revision in the first two years after surgery were assessed.