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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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The effect of electromagnetic navigation in total knee arthroplasty on knee kinematics during functional activities using flexible electrogoniometry

Smith, Julie and Rowe, Philip and Blyth, Mark and Jones, B. (2013) The effect of electromagnetic navigation in total knee arthroplasty on knee kinematics during functional activities using flexible electrogoniometry. Clinical Biomechanics, 28 (1). 23–28. ISSN 0268-0033

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Abstract

Navigated total knee arthroplasty has been shown to increase accuracy in post operative implant alignment. By contrast navigated total knee arthroplasty has not shown significant functional improvements to date, when compared with conventional surgery using subjective clinical questionnaire scores. The aim of this study was to compare the knee joint kinematics measured during functional activities using electrogoniometry 12months after total knee arthroplasty in randomised navigated and conventional total knee arthroplasty groups. The study design was a double blinded, randomised, prospective, controlled trial. The patients were randomised into 2 surgical groups (n=102 navigated group, n=98 conventional group; mean age navigated=67, conventional=67). Flexible electrogoniometry was used to measure patient's knee kinematics with respect to time during 12 functional activities. No significant difference was found in terms of the maximum, minimum and excursion knee joint angle during any of the functional activities. However there was a statistically significant improvement in the level and slope gait cycle at the pre swing phase in the navigated group. There were minimal functional improvements in the navigated total knee arthroplasty group 12months after surgery. However, these are unlikely to have a significant effect on daily activity for the navigated group.