Substantial effects of epimuscular myofascial force transmission on muscular mechanics have major implications on spastic muscle and remedial surgery

Yücesoy, Can A.; Huijing, P.A.J.B.M.

doi:10.1016/j.jelekin.2007.02.008

Cited by 66 publications

(55 citation statements)

References 89 publications

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“…In the simplest of conditions, a proximally directed myofascial load is integrated into the force exerted at the distal tendon, but not at the proximal tendon, and vice versa (see for additional discussions on this point see elsewhere in this issue: Meijer et al, 2007;Yucesoy and Huijing, 2007)), and for examples of graphical illustration of these concepts also (Smeulders and Kreulen, 2007). It should also be noted that direct experimental proof of proximodistal force differences even in animal experiments is often very difficult because only few muscles, usually poly-articular ones, have tendons accessible at their origin and insertion.…”

Section: Proximo-distal Force Differencesmentioning

confidence: 99%

“…This variation in serial distribution of sarcomere length between muscle fibers will give rise to distributions of fiber or fiber-segment mean sarcomere lengths. For more detailed analysis of such features see (Yucesoy and Huijing, 2007).…”

Section: Parallel Distribution Across Muscle Fibersmentioning

confidence: 99%

“…In addition to implications of myofascial force transmission discussed elsewhere in this issue (Yucesoy and Huijing, 2007) the following can be added.…”

Section: Some Implications For Surgerymentioning

confidence: 99%

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Epimuscular myofascial force transmission between antagonistic and synergistic muscles can explain movement limitation in spastic paresis

Huijing

2007

Journal of Electromyography and Kinesiology

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111

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Details and concepts of intramuscular, extramuscular and intermuscular myofascial force transmission are reviewed. Some new experimental data are added regarding myofascial force transmission between antagonistic muscles across the interosseal membrane of the lower hind limb of the rat. Combined with other result presented in this issue, it can be concluded that myofascial force transmission occurs between all muscles within a limb segment. This means that force generated within sarcomeres of an antagonistic muscle may be exerted at the tendon of target muscle or its synergists.Some, in vivo, but initial indications for intersegmental myofascial force transmission are discussed. The concept of myofascial force transmission as an additional load on the muscle proved to be fruitful in the analysis of its muscular effects. In spastic paresis and for healthy muscles distal myofascial loads are often encountered, but cannot fully explain the movement limitations in spastic paresis. Therefore, the concept of simultaneous and opposing myofascial loads is analyzed and used to formulate a hypothesis for explaining the movement limitation: Myofascially transmitted antagonistic force is borne by the spastic muscle, but subsequently transmitted again to distal tendons of synergistic muscles.

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Section: Proximo-distal Force Differencesmentioning

confidence: 99%

Section: Parallel Distribution Across Muscle Fibersmentioning

confidence: 99%

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Epimuscular myofascial force transmission between antagonistic and synergistic muscles can explain movement limitation in spastic paresis

Huijing

2007

Journal of Electromyography and Kinesiology

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111

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“…Besides the abovementioned limitations of measuring net joint moments, a direct relation of moment to muscle fascicle length change would imply that muscle fibers are completely free to move with all sarcomeres contracting as one unit. However, adjacent connective tissues may interfere with shortening on contraction (Kozin and Bednar, 2001;Meijer et al, 2007;Smeulders et al, 2005;Yucesoy et al, 2003a;Yucesoy and Huijing, 2007), resulting in a heterogeneous distribution of sarcomere lengths within the muscle fascicles. As a result, within the complex of muscles and connective tissues of the studied limb, sarcomeres may be short where they are expected to be stretched, and vice versa, invalidating fascicle length for the estimation of sarcomere length (Yucesoy et al, 2003b).…”

Section: Spastic Musclesmentioning

confidence: 99%

Myofascial force transmission and tendon transfer for patients suffering from spastic paresis: A review and some new observations

Smeulders

Kreulen

2007

Journal of Electromyography and Kinesiology

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“…muscle spasticity; mechanical properties; myofascial force transmission; muscle stiffness MUSCLE SPASTICITY HAS BEEN defined as a "velocity-depended resistance to stretch" (24) and arises secondary to upper motoneuron lesions with cerebral palsy and stroke as the most common examples (12). Individuals suffering from spasticity typically experience muscle weakness, enhanced joint stiffness, increased muscle tone, reduced range of joint motion, increased antagonistic co-contraction, and exaggerated reflexes (1,3,6,12,13,32,41,48). These effects severely impair the ability to perform daily activities, and treatment is often needed.…”

mentioning

confidence: 99%

Muscle-specific changes in length-force characteristics of the calf muscles in the spastic Han-Wistar rat

Olesen

Jensen

Uhlendorf

et al. 2014

Journal of Applied Physiology

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Olesen AT, Jensen BR, Uhlendorf TL, Cohen RW, Baan GC, Maas H. Muscle-specific changes in length-force characteristics of the calf muscles in the spastic Han-Wistar rat. J Appl Physiol 117: 989-997, 2014. First published September 4, 2014 doi:10.1152/japplphysiol.00587.2014.-The purpose of the present study was to investigate muscle mechanical properties and mechanical interaction between muscles in the lower hindlimb of the spastic mutant rat. Length-force characteristics of gastrocnemius (GA), soleus (SO), and plantaris (PL) were assessed in anesthetized spastic and normally developed Han-Wistar rats. In addition, the extent of epimuscular myofascial force transmission between synergistic GA, SO, and PL, as well as between the calf muscles and antagonistic tibialis anterior (TA), was investigated. Active length-force curves of spastic GA and PL were narrower with a reduced maximal active force. In contrast, active length-force characteristics of spastic SO were similar to those of controls. In reference position (90°ankle and knee angle), higher resistance to ankle dorsiflexion and increased passive stiffness was found for the spastic calf muscle group. At optimum length, passive stiffness and passive force of spastic GA were decreased, whereas those of spastic SO were increased. No mechanical interaction between the calf muscles and TA was found. As GA was lengthened, force from SO and PL declined despite a constant muscle-tendon unit length of SO and PL. However, the extent of this interaction was not different in spastic rats. In conclusion, the effects of spasticity on length-force characteristics were muscle specific. The changes observed for GA and PL muscles are consistent with the changes in limb mechanics reported for human patients. Our results indicate that altered mechanics in spastic rats cannot be attributed to differences in mechanical interaction, but originate from individual muscular structures. muscle spasticity; mechanical properties; myofascial force transmission; muscle stiffness MUSCLE SPASTICITY HAS BEEN defined as a "velocity-depended resistance to stretch" (24) and arises secondary to upper motoneuron lesions with cerebral palsy and stroke as the most common examples (12). Individuals suffering from spasticity typically experience muscle weakness, enhanced joint stiffness, increased muscle tone, reduced range of joint motion, increased antagonistic co-contraction, and exaggerated reflexes (1,3,6,12,13,32,41,48). These effects severely impair the ability to perform daily activities, and treatment is often needed.To asses whether some of these symptoms are related to altered mechanical properties of muscle-tendon units (MTUs), passive and active length-force characteristics have been estimated as joint moment as a function of gastrocnemius (GA) fascicle length. Spastic GA was found to be stiffer than normally developed in such studies (2, 3). The active lengthforce curve of the spastic GA was narrower and the optimum length was shifted to a shorter fascicle length than in normally deve...

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Substantial effects of epimuscular myofascial force transmission on muscular mechanics have major implications on spastic muscle and remedial surgery

Cited by 66 publications

References 89 publications

Epimuscular myofascial force transmission between antagonistic and synergistic muscles can explain movement limitation in spastic paresis

Epimuscular myofascial force transmission between antagonistic and synergistic muscles can explain movement limitation in spastic paresis

Myofascial force transmission and tendon transfer for patients suffering from spastic paresis: A review and some new observations

Muscle-specific changes in length-force characteristics of the calf muscles in the spastic Han-Wistar rat

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