Finite element modeling of intermuscular interactions and myofascial force transmission

Yücesoy, Can A.; Koopman, Bart; Huijing, P.A.J.B.M.; Grootenboer, H.J.

doi:10.1109/iembs.2001.1020408

Cited by 7 publications

(11 citation statements)

References 14 publications

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“…Such transmission is an important determinant of the distribution of sarcomere lengths in series within muscle fibers. Results of a finite element modeling study on isolated muscle (Yucesoy et al, 2002) support this conclusion. In that work it was demonstrated that if there is an inadequate linking of sarcomeres to the extracellular matrix (as occurs in muscular dystrophies), at high muscle lengths the myofibers may be deformed beyond physiological limits.…”

Section: Distribution Of Length Of Sarcomeres Arranged In Series Withsupporting

confidence: 71%

“…Transmission of the force generated by the sarcomeres, from the full perimeter surface of the myofibers onto the extracellular matrix has been emphasized by some authors (e.g., Street, 1983;Danowski et al, 1992;Trotter & Purslow, 1992;Hijikata et al, 1993;Huijing et al, 1998;Huijing, 1999a;Yucesoy et al, 2002). Such transmission was referred to as myofascial force transmission (Huijing, 1999b).…”

Section: Introductionmentioning

confidence: 99%

“…A 3D local coordinate system representing the fiber, cross-fiber (normal to the fiber direction), and thickness directions is used. For the myofiber element, the total stress that acts only in the local fiber direction is the sum of the active stress of the contractile elements and the stress due to intracellular passive tension (Yucesoy et al, 2002). It is assumed that, at initial muscle length and passive state, the sarcomeres arranged in series within muscle fibers have identical lengths and material properties.…”

Section: Modeling Studymentioning

confidence: 99%

“…A 3D-finite element muscle model (linked fiber-matrix mesh model: lfmm model) with a two-domain approach was developed (Yucesoy et al, 2002). In summary, this model consists of two meshes occupying the same space that are linked elastically representing the extracellular matrix domain (matrix mesh) and intracellular domain (fiber mesh).…”

Section: Modeling Studymentioning

confidence: 99%

“…It is assumed that, at initial muscle length and passive state, the sarcomeres arranged in series within muscle fibers have identical lengths and material properties. The extracellular matrix element incorporates a strain energy density function that accounts for the non-linear and anisotropic material properties and the constancy of muscle volume (Yucesoy et al, 2002).…”

Section: Modeling Studymentioning

confidence: 99%

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Extramuscular Myofascial Force Transmission: Experiments and Finite Element Modeling

Yücesoy

Koopman

Baan

et al. 2003

Archives of Physiology and Biochemistry

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The specific purpose of the present study was to show that extramuscular myofascial force transmission exclusively has substantial effects on muscular mechanics. Muscle forces exerted at proximal and distal tendons of the rat extensor digitorium longus (EDL) were measured simultaneously, in two conditions (1) with intact extramuscular connections (2) after dissecting the muscles' extramuscular connections to a maximum extent without endangering circulation and innervation (as in most in situ muscle experiments). A finite element model of EDL including the muscles' extramuscular connections was used to assess the effects of extramuscular myofascial force transmission on muscular mechanics, primarily to test if such effects lead to distribution of length of sarcomeres within muscle fibers.In condition (1), EDL isometric forces measured at the distal and proximal tendons were significantly different (F dist > F prox , DF approximates maximally 40% of the proximal force). The model results show that extramuscular myofascial force transmission causes distributions of strain in the fiber direction (shortening in the proximal, lengthening in the distal ends of fibers) at higher lengths. This indicates significant length distributions of sarcomeres arranged in series within muscle fibers. Stress distributions found are in agreement with the higher distal force measured, meaning that the muscle fiber is no longer the unit exerting equal forces at both ends. Experimental results obtained in condition (2) showed no significant changes in the length-force characteristics (i.e., proximo-distal force differences were maintained). This shows that a muscle in situ has to be distinguished from a muscle that is truly isolated in which case the force difference has to be zero.We conclude that extramuscular myofascial force transmission has major effects on muscle functioning.

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Section: Distribution Of Length Of Sarcomeres Arranged In Series Withsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Modeling Studymentioning

confidence: 99%

Section: Modeling Studymentioning

confidence: 99%

Section: Modeling Studymentioning

confidence: 99%

See 3 more Smart Citations

Extramuscular Myofascial Force Transmission: Experiments and Finite Element Modeling

Yücesoy

Koopman

Baan

et al. 2003

Archives of Physiology and Biochemistry

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Effects of inter- and extramuscular myofascial force transmission on adjacent synergistic muscles: assessment by experiments and finite-element modeling

Yücesoy

Koopman

Baan

et al. 2003

Journal of Biomechanics

123

103

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Muscle force is determined also by muscle relative position: isolated effects

Maas

Baan

Huijing

2004

Journal of Biomechanics

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Effects on force of changes of the position of extensor digitorum longus muscle (EDL) relative to surrounding tissues were investigated in rat. Connective tissue at the muscle bellies of tibialis anterior (TA), extensor hallucis longus (EHL) and EDL was left intact, to allow myofascial force transmission. The position of EDL muscle was altered, without changing EDL muscle-tendon complex length, and force exerted at proximal and distal tendons of EDL as well as summed force exerted at the distal tendons of TA and EHL muscles (TA+EHL) were measured. Proximal and distal EDL forces as well as distal TA+EHL force changed significantly on repositioning EDL muscle.These muscle position-force characteristics were assessed at two EDL lengths and two TA+EHL lengths. It was shown that changes of muscle force with length changes of a muscle is the result of the length changes per se, as well as of changes of relative position of parts of the muscle. It is concluded that in addition to length, muscle position relative to its surroundings co-determines isometric muscle force. r

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Finite element modeling of intermuscular interactions and myofascial force transmission

Cited by 7 publications

References 14 publications

Extramuscular Myofascial Force Transmission: Experiments and Finite Element Modeling

Extramuscular Myofascial Force Transmission: Experiments and Finite Element Modeling

Effects of inter- and extramuscular myofascial force transmission on adjacent synergistic muscles: assessment by experiments and finite-element modeling

Muscle force is determined also by muscle relative position: isolated effects

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