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Effects of Bracing on Knee Kinematics in Athletes After Anterior Cruciate Ligament Reconstruction

By Hsiao-Yun Chang, Chia-Che Liu and Bi-Fon Chang

Abstract

The bracing restraint effect on subjects with anterior cruciate ligament reconstruction is controversial. Purpose: The purpose of this study was to compare the effects of bracing restraint on knee kinematics during landing of vertical jump and hop movements for athletes with chronic anterior cruciate ligament reconstruction. Seven male athletes with chronic anterior cruciate ligament reconstruction. Methods:All subjects underwent 2 selected movements (vertical jump and hop) to collect the knee kinematics data under different bracing conditions (with bracing and without bracing). A two-way analysis of variance with repeated-measures design was conducted to investigate the effects of different bracing conditions and selected movements on knee kinematics. Results: The results revealed that no significant interaction between bracing condition and selected movements. The hop movement had found significantly greater degree than vertical jump in maximal knee flexion, abduction, flexion angle at maximal knee abduction, flexion angle at maximal knee external rotation, and joint excursion. Conclusions: Wearing functional knee braces did not affect knee kinematics in selected movements for subjects with chronic anterior cruciate ligament reconstruction. The hop movement had more length in joint excursion than vertical jump, suggesting that hopping may be a more harmful movement than vertical jumping for subjects with anterior cruciate ligament reconstruction

Topics: Brace, Knee, Biomechanics, Vertrical Jump, Hop
Publisher: Taichung, Taiwan :Graduate Institute of Sports & Health Management, National Chung Hsing University
Year: 2014
OAI identifier: oai:ir.lib.nchu.edu.tw:11455/84635
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