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The application of support vector machines for detecting recovery from knee replacement surgery using spatio-temporal gait parameters

Levinger, Pazit, Lai, Daniel, Begg, Rezaul, Webster, Kate E and Feller, Julian A (2009) The application of support vector machines for detecting recovery from knee replacement surgery using spatio-temporal gait parameters. Gait and Posture, 29 (1). pp. 91-96. ISSN 0966-6362

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Knee osteoarthritis (OA) is one of the leading causes of disability among the elderly which, depending on severity, may require surgical intervention. Knee replacement surgery provides pain relief and improves physical function including gait. However gait dysfunction such as altered spatio-temporal measures may persist after the surgery. In this paper, we investigated the application of support vector machines (SVM) to classify gait patterns indicative of knee OA before surgery based on 12 spatio-temporal gait parameters and investigated whether SVMs could be used to predict gait improvement 2 and 12 months following knee replacement surgery. Test results for the pre-operative data indicated that the SVM could successfully identify individuals with OA gait from the healthy using all of the spatio-temporal parameters with a maximum leave one out accuracy of 100% for the training set and 88.89% for the test set. Findings indicated that three patients still had altered gait patterns 2 months post-knee replacement surgery, but all individuals showed improvement in gait 12 months following surgery. Consequently, the SVM detected improvement in gait function due to surgical intervention at 2 and 12 months following knee replacement which coincided with clinical assessment of the knee. This suggests that spatio-temporal parameters contain important discriminative information which may be used for the identification of pathological gait using an SVM classifier.

Item Type: Article
Uncontrolled Keywords: ResPubID18438, knee replacement, support vector machine, spatio-temporal parameters
Subjects: Current > FOR Classification > 1004 Medical Biotechnology
Historical > SEO Classification > 970111 Expanding Knowledge in the Medical and Health Sciences
Historical > Faculty/School/Research Centre/Department > Centre for Ageing, Rehabilitation, Exercise & Sport Science (CARES)
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 03 May 2012 02:21
Last Modified: 05 Oct 2020 23:57
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Citations in Scopus: 25 - View on Scopus

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