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Correlations between patient-perceived outcome and objectively-measured biomechanical change following total knee replacement

Biggs, P. R., Whatling, G. M., Wilson, C. and Holt, C 2019. Correlations between patient-perceived outcome and objectively-measured biomechanical change following total knee replacement. Gait and Posture 70 , pp. 65-70. 10.1016/j.gaitpost.2019.02.028

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Abstract

Background: Total Knee Replacement (TKR) surgery is being utilised in a younger, more active population with greater functional expectations. Understanding whether patient-perceived measures of function reflect objective biomechanical measures is critical in understanding whether functional limitations can be adequately captured within a clinical setting. Research Question: Do changes in objective gait biomechanics measures reflect patient-reported outcome measures at approximately 12 months following TKR surgery? Methods: Three-dimensional gait analysis was performed on 41 patients with OA who were scheduled for TKR surgery, 22 of which have returned for a (9–24 month) follow-up assessment. Principal Component Analysis was used to define features of variation between OA subjects and an additional 31 non-pathological control subjects. These were used to train the Cardiff Classifier, an objective classification technique, and subsequently quantify changes following TKR surgery. Patient-perceived changes were also assessed using the Oxford Knee Score (OKS), Knee Outcome Survey (KOS), and Pain Audit Collection System scores (PACS). Pearson and Spearman correlation coefficients were calculated to establish the relationship between changes in objectively-measured and perceived outcome.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0966-6362
Date of First Compliant Deposit: 1 March 2019
Date of Acceptance: 25 February 2019
Last Modified: 30 Apr 2019 17:25
URI: http://orca.cf.ac.uk/id/eprint/120119

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