Stage-dependent muscle force patterns during femoral fracture reduction: a patient-specific modeling study.

Authors

Dongru Xie, Hongjian Yu, Zhijiang Du, Xin Hua, Xiangyu Shen, Zhen Wang, Canhua Ye, Huiren Tao

Published in

Computer methods in biomechanics and biomedical engineering. Pages 1-11. Aug 19, 2026. Epub Aug 19, 2026.

Abstract

During fracture reduction, bone segment pose changes induce complex muscle force responses, but their patterns and association with fracture geometry remain unclear. Using CT data from 16 femoral shaft fracture cases, patient-specific musculoskeletal models were developed in AnyBody. A staged fracture reduction simulation framework comprising traction, derotation, translational alignment, and length restoration was established. Muscle force distribution exhibited heterogeneity and stage-dependent characteristics. Additionally, muscle force showed a multivariate association with fracture geometric parameters. The multivariate model achieved an $R^2$ of 0.551, outperforming the univariate model. These findings provide quantitative biomechanical evidence for understanding muscle responses during fracture reduction.

PMID:
42619271
Bibliographic data and abstract were imported from PubMed on 20 Aug 2026.

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