Muscle optimization techniques impact the magnitude of calculated hip joint contact forces

M. Wesseling*, L.C. Derikx, F. de Groote, W. Bartels, C. Meyer, Nicolaas Jacobus Joseph Verdonschot, I. Jonkers

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    49 Citations (Scopus)
    8 Downloads (Pure)

    Abstract

    In musculoskeletal modelling, several optimization techniques are used to calculate muscle forces, which strongly influence resultant hip contact forces (HCF). The goal of this study was to calculate muscle forces using four different optimization techniques, i.e., two different static optimization techniques, computed muscle control (CMC) and the physiological inverse approach (PIA). We investigated their subsequent effects on HCFs during gait and sit to stand and found that at the first peak in gait at 15–20% of the gait cycle, CMC calculated the highest HCFs (median 3.9 times peak GRF (pGRF)). When comparing calculated HCFs to experimental HCFs reported in literature, the former were up to 238% larger. Both static optimization techniques produced lower HCFs (median 3.0 and 3.1 pGRF), while PIA included muscle dynamics without an excessive increase in HCF (median 3.2 pGRF). The increased HCFs in CMC were potentially caused by higher muscle forces resulting from co-contraction of agonists and antagonists around the hip. Alternatively, these higher HCFs may be caused by the slightly poorer tracking of the net joint moment by the muscle moments calculated by CMC. We conclude that the use of different optimization techniques affects calculated HCFs, and static optimization approached experimental values best.
    Original languageEnglish
    Pages (from-to)430-438
    Number of pages9
    JournalJournal of orthopaedic research
    Volume33
    Issue number3
    DOIs
    Publication statusPublished - 2015

    Keywords

    • 2024 OA procedure

    Fingerprint

    Dive into the research topics of 'Muscle optimization techniques impact the magnitude of calculated hip joint contact forces'. Together they form a unique fingerprint.

    Cite this