Journal
JOURNAL OF ARTHROPLASTY
Volume 30, Issue 11, Pages 2027-2033Publisher
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
DOI: 10.1016/j.arth.2015.05.024
Keywords
sit to stand; lateral trunk angle; biomechanics; total hip arthroplasty; joint moment
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Funding
- National Institutes of Health [K12 HD055931]
- Comprehensive Opportunities in Rehabilitation Research Training (CORRT), the University of Delaware Research Foundation
- University of Jordan
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The purpose of this study was to evaluate changes in movement patterns during a sit-to-stand (STS) task before and after total hip arthroplasty (THA), and to compare biomechanical outcomes after THA to a control group. Forty-five subjects who underwent THA and twenty-three healthy control subjects participated in three-dimensional motion analysis. Pre-operatively, subjects exhibited inter-limb movement asymmetries with lower vertical ground reaction force (VGRF) and smaller moments on the operated limb. Although there were significant improvements in movement symmetry 3 months after THA, patients continued to demonstrate lower VGRF and smaller moments on the operated limb compared to non-operated and to control limbs. Future studies should identify the contributions of physical impairments and the influence of surgical approach on STS biomechanics. (C) 2015 Elsevier Inc. All rights reserved.
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