Analysis of human abnormal walking using a multi-body model: joint models for abnormal walking and walking aids to reduce compensatory action.

Abstract

This paper proposes new models of diseased joints and evaluates the effectiveness of walking aids such as a cane and a brace for compensating for lost functions due to joint disorders. The ZMJ concept described in the previous work (Yamashita and Tagawa, 1988. In: Radharaman (Ed.), Robotics and Factories of the Future'87. Springer, New York, pp. 670-677) is modified into three joint models as follows: a passive element joint (PEJ) which has a spring at the diseased joint; a constrained range joint (CRJ), the motion of which stays within some constrained relative angle; a partial moment joint (PMJ) which can produce a partial amount of the moment produced about the joint in normal walking. A cane can enlarge a supporting area and adjust the posture of the upper torso to be upright. An ischial weight-bearing brace is effective for conservative management of hip disorders by reducing a load to the joint (Shiba et al., 1998. Clinical Orthopaedics and Related Research 351, 149-157). Walking aids like a cane or brace have been conveniently used by the handicapped. Abnormal walking was simulated for each joint model. Dynamic effects of a cane and a brace on abnormal walking were examined by the multi-body walking model.

• Authors: Y Tagawa, N Shiba, S Matsuo, T Yamashita
• Journal: Journal of biomechanics (J Biomech) Vol. 33 Issue 11 Pg. 1405-14 (Nov 2000) ISSN: 0021-9290 [Print] United States
• PMID: 10940399 (Publication Type: Journal Article)

Topics

• Ankle Joint (physiopathology)
• Biomechanical Phenomena
• Braces
• Canes
• Hip Joint (physiopathology)
• Humans
• Joint Diseases (physiopathology, rehabilitation)
• Knee Joint (physiopathology)
• Models, Biological
• Movement (physiology)
• Walking (physiology)