Muscle - Tendon Mechanics

Spring or string: does tendon elastic action influence wing muscle mechanics in bat flight?

Tendon springs influence locomotor movements in many terrestrial animals, but their roles in locomotion through fluids as well as in small-bodied mammals are less clear. We measured muscle, tendon and joint mechanics in an elbow extensor of a small fruit bat during ascending flight. At the end of downstroke, the tendon was stretched by elbow flexion as the wing was folded. At the end of upstrok...

Regional variation of tibialis anterior tendon mechanics is lost following denervation.

Denervation or inactivity is known to decrease the mass and alter the phenotype of muscle. The mechanical response of tendon to inactivity that has been determined experimentally differs from what is reported by patients. We investigated the hypothesis that this difference was the result of artifacts of the testing process and did not represent what occurred in vivo. To test this hypothesis, a ...

The series elastic shock absorber: tendon elasticity modulates energy dissipation by muscle during burst deceleration.

During downhill running, manoeuvring, negotiation of obstacles and landings from a jump, mechanical energy is dissipated via active lengthening of limb muscles. Tendon compliance provides a 'shock-absorber' mechanism that rapidly absorbs mechanical energy and releases it more slowly as the recoil of the tendon does work to stretch muscle fascicles. By lowering the rate of muscular energy dissip...

Tendon Mechanics Strength Mechanical Testing Clinical LOWER EXTREMITY TENDON STRENGTHS - IMPLICATIONS FOR POSTERIOR TIBIAL TENDON RECONSTRUCTION

Introduction: Posterior tibial tendon reconstruction frequently involves transfer of the flexor digitorum longus (FDL) tendon to the navicular and debridement of the diseased portion of the posterior tibial tendon as well as a calcaneal osteotomy and possibly a lateral column lengthening. If the posterior tibial tendon muscle appears to have some contractile property then it is anastamosed to t...

Muscle - tendon mechanics explain unexpected effects of 1 exoskeleton assistance on metabolic rate during walking

Simulation of biceps femoris musculotendon mechanics during the swing phase of sprinting.

INTRODUCTION/PURPOSE Characterization of hamstring mechanics during sprinting is fundamental to understanding musculotendon injury mechanisms. The objective of this study was to use muscle-actuated forward dynamic simulations to investigate musculotendon mechanics of the biceps femoris long head during the swing phase of sprinting. METHODS We used a three-dimensional linked segment model with...