Micromechanical modeling of the epimysium of the skeletal muscles

Yingxin Gao, Anthony M. Waas, John A. Faulkner, Tatiana Y. Kostrominova, Alan S. Wineman

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


A micromechanical model has been developed to investigate the mechanical properties of the epimysium. In the present model, the collagen fibers in the epimysium are embedded randomly in the ground substance. Two parallel wavy collagen fibers and the surrounding ground substance are used as the repeat unit (unit cell), and the epimysium is considered as an aggregate of unit cells. Each unit cell is distributed in the epimysium with some different angle to the muscle fiber direction. The model allows the progressive straightening of the collagen fiber as well as the effects of fiber reorientation. The predictions of the model compare favorably against experiment. The effects of the collagen fiber volume fraction, collagen fiber waviness at the rest length and the mechanical properties of the collagen fibers and the ground substance are analyzed. This model allows the analysis of mechanical behavior of most soft tissues if appropriate experimental data are available.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalJournal of Biomechanics
Issue number1
StatePublished - Jan 1 2008


  • Collagen fiber
  • Epimysium
  • Ground substance
  • Mechanical properties
  • Reorientation
  • Unit cell
  • Waviness

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

Fingerprint Dive into the research topics of 'Micromechanical modeling of the epimysium of the skeletal muscles'. Together they form a unique fingerprint.

Cite this