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Calcaneal loading during walking and runningPURPOSE: This study of the foot uses experimentally measured kinematic and kinetic data with a numerical model to evaluate in vivo calcaneal stresses during walking and running. METHODS: External ground reaction forces (GRF) and kinematic data were measured during walking and running using cineradiography and force plate measurements. A contact-coupled finite element model of the foot was developed to assess the forces acting on the calcaneus during gait. RESULTS: We found that the calculated force-time profiles of the joint contact, ligament, and Achilles tendon forces varied with the time-history curve of the moment about the ankle joint. The model predicted peak talocalcaneal and calcaneocuboid joint loads of 5.4 and 4.2 body weights (BW) during walking and 11.1 and 7.9 BW during running. The maximum predicted Achilles tendon forces were 3.9 and 7.7 BW for walking and running. CONCLUSIONS: Large magnitude forces and calcaneal stresses are generated late in the stance phase, with maximum loads occurring at approximately 70% of the stance phase during walking and at approximately 60% of the stance phase during running, for the gait velocities analyzed. The trajectories of the principal stresses, during both walking and running, corresponded to each other and qualitatively to the calcaneal trabecular architecture.
Document ID
20040141629
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Giddings, V. L.
(Stanford University CA, United States)
Beaupre, G. S.
Whalen, R. T.
Carter, D. R.
Date Acquired
August 22, 2013
Publication Date
March 1, 2000
Publication Information
Publication: Medicine and science in sports and exercise
Volume: 32
Issue: 3
ISSN: 0195-9131
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
NASA Center ARC
NASA Program Biomedical Research and Countermeasures
NASA Discipline Musculoskeletal

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