Bilateral knee osteoarthritis does not affect inter-joint coordination in older adults with gait deviations during obstacle-crossing

被引:32
|
作者
Wang, Ting-Ming [1 ,2 ]
Yen, Hsiao-Ching [1 ]
Lu, Tung-Wu [1 ]
Chen, Hao-Ling [3 ]
Chang, Chu-Fen [1 ]
Liu, Yen-Hung [1 ]
Tsai, Wen-Chi [1 ,4 ]
机构
[1] Natl Taiwan Univ, Inst Biomed Engn, Taipei, Taiwan
[2] Natl Taiwan Univ Hosp, Dept Orthopaed Surg, Taipei, Taiwan
[3] Natl Taiwan Univ, Sch Occupat Therapy, Taipei, Taiwan
[4] Taipei Med Univ, Shuang Ho Hosp, Dept Orthopaed Surg, Taipei, Taiwan
关键词
Gait; Obstacles; Coordination; Continuous relative phase; Phase plot; Variability; Knee osteoarthritis; RELATIVE PHASE; PROPRIOCEPTION; MOVEMENT; PATTERNS; WALKING; LIMB; INDIVIDUALS; PERFORMANCE; LIMITATIONS; DISABILITY;
D O I
10.1016/j.jbiomech.2009.06.029
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Fifteen elderly subjects with bilateral medial knee osteoarthritis (OA) and 15 healthy elderly subjects walked and crossed obstacles with heights of 10%, 20%, and 30% of their leg lengths while sagittal angles and angular velocities of each joint were measured and their phase angles (phi) calculated. Continuous relative phase (CRP) were also obtained, ie. phi(hip-knee) and phi(knee-ankle). The standard deviations of the CRP curve points were averaged to obtain deviation phase (DP) values for the stance and swing phases. Significant differences between the OA and control groups were found in several of the peak and crossing angles, and angular velocities at the knee and ankle. Both groups had similar CRP patterns, and the DP values of the hip-knee and knee-ankle CRP curves were not significantly different between the two groups. Despite significant changes in the joint kinematics, knee OA did not significantly change the way the motions of the lower limb joints are coordinated during obstacle-crossing. it appears that the OA groups adopted a particular biomechanical strategy among all possible strategies that can accommodate the OA-induced changes of the knee mechanics using unaltered inter-joint coordination control This enabled the OA subjects to accommodate reliably the mechanical demands related to bilateral knee OA in the sagittal plane during obstacle-crossing. Maintaining normal and reliable inter-joint coordination may be considered a goal of therapeutic intervention, and the patterns and variability of inter-joint coordination can be used for the evaluation of treatment effects (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2349 / 2356
页数:8
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