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Knee Surgery, Sports Traumatology, Arthroscopy

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01-07-2014 | Knee

The Rotaglide+ total knee replacement: a comparison of mobile versus fixed bearings

Authors: Lorcan McGonagle, Louisa Bethell, Natalie Byrne, Ben G. Bolton-Maggs

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 7/2014

Abstract

Purpose

Mobile-bearing knee replacements were introduced as an alternative to their fixed-bearing counterparts. Movement of the polyethylene insert relative to the tibial tray has been shown to decrease contact stresses, wear and polyethylene-induced osteolysis. The aim of this study is to compare outcomes between mobile and fixed-bearing surfaces of the Rotaglide+ total knee prosthesis.

Methods

A prospective, partially randomised twin cohort study of 149 Rotaglide+ total knee arthroplasties performed in one unit between September 2000 and January 2005, was carried out. The patients were allocated to a mobile or fixed bearing. The patients were assessed using a pain visual analogue score (VAS), the American Knee Surgeons Score (AKSS) the range of movement, the Oxford Knee Score (OKS) and walking time. Seventy-five patients had mobile-bearing surfaces, and 74 had fixed bearings.

Results

At 5-year follow–up, there was no significant difference between the fixed- and mobile-bearing implants with respect to range of movement [104.7(SD 17.0) vs. 103.6(SD 15.7) degrees]; AKSS [146.6(SD 23.9) vs. 144.1(SD 32.4)]; VAS [3.3(SD 1.2) vs. 3.4(SD 1.3)]; OKS [30.8(SD 9.7) vs. 29.6(SD 10.9)], respectively.

Conclusion

This study is the first of its kind to outline the medium-term (≥5 years) outcomes in Rotaglide+ total knee replacements. Its findings reinforce previous research which has shown no discernible difference in clinical outcomes between the 2 groups.

Level of evidence

II.

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Title: The Rotaglide+ total knee replacement: a comparison of mobile versus fixed bearings
Authors: Lorcan McGonagle
Louisa Bethell
Natalie Byrne
Ben G. Bolton-Maggs
Publication date: 01-07-2014
Publisher: Springer Berlin Heidelberg
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 7/2014
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-012-2351-5

Keynote webinar | Spotlight on medication adherence

Springer Medicine

The Rotaglide+ total knee replacement: a comparison of mobile versus fixed bearings

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

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