Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.clinbiomech.2010.07.011
Title: Effect of an anterior-sloped brace joint on anterior tibial translation and axial tibial rotation: A motion analysis study
Authors: Yeow, C.H. 
Gan, W.L.
Lee, P.V.S.
Goh, J.C.H. 
Keywords: Anterior tibial translation
Axial tibial rotation
Impact landing
Knee brace
Posterior tibial slope
Issue Date: Dec-2010
Citation: Yeow, C.H., Gan, W.L., Lee, P.V.S., Goh, J.C.H. (2010-12). Effect of an anterior-sloped brace joint on anterior tibial translation and axial tibial rotation: A motion analysis study. Clinical Biomechanics 25 (10) : 1025-1030. ScholarBank@NUS Repository. https://doi.org/10.1016/j.clinbiomech.2010.07.011
Abstract: Background: Anterior tibial translation and axial tibial rotation are major biomechanical factors involved in anterior cruciate ligament injuries. This study sought to evaluate a brace prototype designed with an anterior-sloped joint, in terms of its efficacy in attenuating anterior tibial translation and axial tibial rotation during landing, using a motion analysis approach. Methods: Ten healthy male subjects performed single-leg landing tasks from a 0.6-m height with and without the brace prototype. Ground reaction force and kinematics data were obtained using a motion-capture system and force-plates. Anterior tibial translation and axial tibial rotation were determined based on tibial and femoral marker reference frames. Vertical and anterior-posterior ground reaction forces, hip, knee and ankle joint range-of-motions and angular velocities, anterior tibial translation and axial tibial rotation were compared between unbraced and braced conditions using Wilcoxon signed-rank test. Findings: We found no significant difference in peak vertical and anterior-posterior ground reaction forces (p = 0.770 and p = 0.332 respectively) between unbraced and braced conditions. Knee joint range-of-motion and angular velocity were lower (p = 0.037 and p = 0.038 respectively) for braced condition than unbraced condition. Anterior tibial translation and axial tibial rotation were reduced (p = 0.027 and p = 0.006 respectively) in braced condition, compared to unbraced condition. Interpretation: The anterior-sloped brace joint helps to attenuate anterior tibial translation and axial tibial rotation present in the knee joint during landing. It is necessary to test the brace prototype in a sporting population with realistic sports landing situations in order to assess its effectiveness in lowering anterior cruciate ligament injury risk. © 2010 Elsevier Ltd.
Source Title: Clinical Biomechanics
URI: http://scholarbank.nus.edu.sg/handle/10635/108353
ISSN: 02680033
DOI: 10.1016/j.clinbiomech.2010.07.011
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