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Influence of muscle groups' activation on proximal femoral growth tendency
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, BioMEx.ORCID iD: 0000-0002-4701-8860
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, BioMEx. Department of Women’s and Children’s Health, Pediatric Orthopaedic Surgery Karolinska Institutet Stockholm Sweden.ORCID iD: 0000-0001-5417-5939
2017 (English)In: Biomechanics and Modeling in Mechanobiology, ISSN 1617-7959, E-ISSN 1617-7940, Vol. 16, no 6, p. 1869-1883Article in journal (Refereed) Published
Abstract [en]

Muscle and joint contact force influence stresses at the proximal growth plate of the femur and thus bone growth, affecting the neck shaft angle (NSA) and femoral anteversion (FA). This study aims to illustrate how different muscle groups' activation during gait affects NSA and FA development in able-bodied children. Subject-specific femur models were developed for three able-bodied children (ages 6, 7, and 11 years) using magnetic resonance images. Contributions of different muscle groups-hip flexors, hip extensors, hip adductors, hip abductors, and knee extensors-to overall hip contact force were computed. Specific growth rate for the growth plate was computed, and the growth was simulated in the principal stress direction at each element in the growth front. The predicted growth indicated decreased NSA and FA (of about over a four-month period) for able-bodied children. Hip abductors contributed the most, and hip adductors, the least, to growth rate. All muscles groups contributed to a decrease in predicted NSA (similar to 0.01 degrees-0.04 degrees and FA (similar to 0.004 degrees-0.2 degrees), except hip extensors and hip adductors, which showed a tendency to increase the FA (similar to 0.004 degrees-0.2 degrees). Understanding influences of different muscle groups on long bone growth tendency can help in treatment planning for growing children with affected gait.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG , 2017. Vol. 16, no 6, p. 1869-1883
Keywords [en]
Bone tissue modeling, Deformity development, Biomechanics, Individualized, Finite element analysis, Osteogenic index
National Category
Medical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-217928DOI: 10.1007/s10237-017-0925-3ISI: 000414450200005PubMedID: 28639152Scopus ID: 2-s2.0-85021103382OAI: oai:DiVA.org:kth-217928DiVA, id: diva2:1158902
Note

QC 20171121

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-21Bibliographically approved

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Yadav, PritiGutierrez-Farewik, Elena

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