Biomechanical strategies for successful obstacle crossing with the trailing limb in older adults with medial compartment knee osteoarthritis

JOURNAL OF BIOMECHANICS

卷:41

Article

Chen, Hao-Ling^1,2  Lu, Tung-Wu¹  Wang, Ting-Ming^1,3  Huang, Shier-Chieg⁴ 

[1] Natl Taiwan Univ, Inst Biomed Engn, Taipei, Taiwan

[2] Natl Taiwan Univ, Sch Occupat Therapy, Taipei, Taiwan

[3] Natl Taiwan Univ, Dept Orthopaed Surg, Taipei, Taiwan

[4] Natl Taiwan Univ Hosp, Yun Lin Branch, Dept Orthopaed Surg, Taipei, Taiwan

关键词: knee osteoarthritis;    gait;    obstacle crossing;    joint kinematics;    joint kinetics;   

DOI  :  10.1016/j.jbiomech.2007.11.017

来源: Elsevier

【 摘 要 】

To investigate the biomechanical strategy adopted by older adults with medial compartment knee osteoarthritis (OA) for successful obstacle crossing with the trailing limb, and to discuss its implications for fall-prevention, 15 older adults with bilateral medial compartment knee OA and 15 healthy controls were recruited to walk and cross obstacles of heights of 10%, 20%, and 30% of their leg lengths. Kinematic and kinetic data were obtained using a three-dimensional (3D) motion analysis system and forceplates. The OA group had higher trailing toe clearance than the controls. When the trailing toe was above the obstacle, the OA group showed greater swing hip abduction, yet smaller stance hip adduction, knee flexion, and ankle eversion. They showed greater pelvic anterior tilt and toe-out angle. They also exhibited greater peak knee abductor moments during early stance and at the instant when the swing toe was above the obstacle, while a greater peak hip abductor moment was found during late stance. Smaller knee extensor, yet greater hip extensor moments, were found in the OA group throughout the stance phase. In order to achieve higher toe clearance with knee OA, particular joint kinematic and kinetic strategies have been adopted by the OA group. Weakness in the hip abductors and extensors in individuals with OA may be risk factors for tripping owing to the greater demands on these muscle groups during obstacle crossing by these individuals. (C) 2007 Elsevier Ltd. All rights reserved.

【 授权许可】

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