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Ageing effects on knee and ankle joint angles at key events and phases of the gait cycle

Begg, Rezaul and Sparrow, W. A (2006) Ageing effects on knee and ankle joint angles at key events and phases of the gait cycle. Journal of Medical Engineering & Technology, 30 (6). pp. 382-389. ISSN 0309-1902

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Abstract

The objective of this research was to determine whether joint angles at critical gait events and during major energy generation/absorption phases of the gait cycle would reliably discriminate age-related degeneration during unobstructed walking. The gaits of 24 healthy adults (12 young and 12 elderly) were analysed using the PEAK Motus motion analysis system. The elderly participants showed significantly greater single (60.3% versus 62.3%, p < 0.01) and double ( p < 0.05) support times, reduced knee flexion (47.7° versus 43.0°, p < 0.05) and ankle plantarflexion (16.8° compared to 3.3°, p = 0.053) at toe off, reduced knee flexion during push-off and reduced ankle dorsiflexion (16.8° compared to 22.0°, p < 0.05) during the swing phase. The plantarflexing ankle joint motion during the stance to swing phase transition (A2) for the young group (31.3°) was about twice ( p < 0.05) that of the elderly (16.9°). Reduced knee extension range of motion suggests that the elderly favoured a flexed-knee gait to assist in weight acceptance. Reduced dorsiflexion by the elderly in the swing phase implies greater risk of toe contact with obstacles. Overall, the results suggest that joint angle measures at critical events/phases in the gait cycle provide a useful indication of age-related degeneration in the control of lower limb trajectories during unobstructed walking.

Item Type: Article
Uncontrolled Keywords: gait analysis, joint angles, kinematics, biomechanics, elderly
Subjects: RFCD Classification > 320000 Medical and Health Sciences
Faculty/School/Research Centre/Department > Centre for Ageing, Rehabilitation, Exercise & Sport Science (CARES)
Depositing User: Ms Phung T Tran
Date Deposited: 04 Mar 2009 15:19
Last Modified: 05 Jul 2011 05:22
URI: http://vuir.vu.edu.au/id/eprint/1873
DOI: 10.1080/03091900500445353
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Citations in Scopus: 13 - View on Scopus

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