Musculoskeletal model choice influences hip joint load estimations during gait

The prevalence of musculoskeletal modeling studies investigating hip contact forces and the number of models used to conduct such investigations has increased in recent years. However, the consistency between models remain unknown and differences in model predicted hip contact forces between studies...

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Bibliographic Details
Published in:Journal of biomechanics 2019-06, Vol.91, p.124-132
Main Authors: Weinhandl, Joshua T., Bennett, Hunter J.
Format: Article
Language:English
Subjects:
Biomedical materials
Bone implants
Contact force
Correlation coefficients
Datasets
Gait
Hip
Hip joint
Hip joint forces
Joints (anatomy)
Kinematics
Mathematical models
Muscles
Musculoskeletal simulations
OpenSim
Optimization
Prostheses
Surgical implants
Total hip arthroplasty
Walking
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Summary:The prevalence of musculoskeletal modeling studies investigating hip contact forces and the number of models used to conduct such investigations has increased in recent years. However, the consistency between models remain unknown and differences in model predicted hip contact forces between studies are difficult to distinguish from natural inter-individual differences. The purpose of this study was therefore to evaluate differences in hip joint contact forces during gait between four OpenSim models. These models included the generic models gait2392 and the Arnold Lower Limb Model, as well as the hip specific models hip2372 and London Lower Limb Model. Data from four individuals who have had a total hip replacement with instrumented hip implants performing slow, normal, and fast walking trials were taken from the HIP98 database to evaluate the various models effectiveness at estimating hip loads. Muscle forces were estimated using static optimization and hip contact forces were calculated using the JointReaction analysis in OpenSim. Results indicated that, for gait, the hip specific London Lower Limb Model consistently predicted peak push-off hip joint contact forces with lower magnitude and timing errors compared to the other models. Likewise, root mean square error values were lowest and correlation coefficients were highest for the London Lower Limb Model. These results suggest that the London Lower Limb Model is the most appropriate model for investigations focused on hip joint loading.
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2019.05.015