Lower‐limb muscle function during gait in varus mal‐aligned osteoarthritis patients

ABSTRACT This study quantified the contributions by muscular, gravitational and inertial forces to the ground reaction force (GRF) and external knee adduction moment (EKAM) for knee osteoarthritis (OA) patients and controls walking at similar speeds. Gait data for 39 varus mal‐aligned medial knee OA...

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Bibliographic Details
Published in:Journal of orthopaedic research 2018-08, Vol.36 (8), p.2157-2166
Main Authors: Sritharan, Prasanna, Lin, Yi‐Chung, Richardson, Sara E., Crossley, Kay M., Birmingham, Trevor B., Pandy, Marcus G.
Format: Article
Language:English
Subjects:
gait
knee adduction
medial compartment
muscle contributions
musculoskeletal modeling
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Summary:ABSTRACT This study quantified the contributions by muscular, gravitational and inertial forces to the ground reaction force (GRF) and external knee adduction moment (EKAM) for knee osteoarthritis (OA) patients and controls walking at similar speeds. Gait data for 39 varus mal‐aligned medial knee OA patients and 15 controls were input into musculoskeletal models to calculate the contributions of individual muscles and gravity to the fore‐aft (progression), vertical (support), and mediolateral (balance) GRF, and the EKAM. The temporal patterns of contributions to GRF and EKAM were similar between the groups. Magnitude differences in GRF contributions were small but some reached significance. Peak GRF contributions were lower in patients except hamstrings in early‐stance progression (p 
ISSN:0736-0266
1554-527X
DOI:10.1002/jor.23883