John, J and Kuiper, JH and May, PC (2009) Age at follow-up and mechanical axis are good predictors of function after unicompartmental knee arthroplasty. An analysis of patients over 17 years follow-up. Acta Orthoaedica Belgica, 75 (1). 45 - 50. ISSN 0001-6462

[img]
Preview
Text
Age at follow-up and mechanical axis are good predictors of function after unicompartmental knee athroplasty (JKuiper).pdf

Download (108kB) | Preview

Abstract

Alteration of knee alignment after unicompartmental knee arthroplasty (UKA) influences wear of the prosthesis and progression of arthrosis. Recent reports have questioned the traditional view that under-correction of the deformity is advisable in UKA. The aim of this study was to analyse whether the location of the mechanical axis at the knee influences the function of the knee after UKA. We analysed the data from 40 patients (54 knees) who underwent UKA over 17 years. The Bristol knee score was maximal when the mechanical axis passed through zones 0 (area of tibial spines) or 1 (inner half of medial or lateral plateau). The average Bristol knee score of those patients was 18% higher than in patients in whom the mechanical axis passed through the other zones (p < 0.01, t-test). Using multiple regression analysis to correct for the effect of age on score, a significant relationship was found between the location of mechanical axis and function (p < 0.001). Based on these findings, surgeons should attempt to restore the mechanical axis to the centre of the knee during UKA, to help achieve better function.

Item Type: Article
Uncontrolled Keywords: Unicompartmental knee arthroplasty, mechanical axis, Bristol knee score
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Medicine and Health Sciences > Institute for Science and Technology in Medicine
Related URLs:
Depositing User: Symplectic
Date Deposited: 26 Nov 2014 14:39
Last Modified: 24 May 2016 13:25
URI: http://eprints.keele.ac.uk/id/eprint/108

Actions (login required)

View Item View Item