Axial speed of sound is related to tendon's nonlinear elasticity

Axial speed of sound for the monitoring of injured equine tendons: a preliminary study.

Equine superficial digital flexor tendons (SDFT) are often injured, and they represent an excellent model for human sport tendinopathies. While lesions can be precisely diagnosed by clinical evaluation and ultrasonography, a prognosis is often difficult to establish; the knowledge of the injured tendon's mechanical properties would help in anticipating the outcome. The objectives of the present...

Granular packings: nonlinear elasticity, sound propagation, and collective relaxation dynamics.

Experiments on isotropic compression of a granular assembly of spheres show that the shear and bulk moduli vary with the confining pressure faster than the 1/3 power law predicted by Hertz-Mindlin effective medium theories of contact elasticity. Moreover, the ratio between the moduli is found to be larger than the prediction of the elastic theory by a constant value. The understanding of these ...

Is stress management related to workforce productivity?

The purpose of the study was to determine the relationship between stressmanagement and workforce productivity of Amol Industrial Park located inMazandaran Province. The total population size in the research was 250 from topmanagers, middle managers and supervisors responsible in the before-mentionedIndustrial Park and the sample size was determined through Morgan samplepopulation volume table ...

Is inflammation harmless to loaded tendons?

Tendon's Nonlinear Elasticity

Axial speed of sound (SOS) measurements have been successfully applied to noninvasively evaluate tendon load, while preliminary studies showed that this technique also has a potential clinical interest in the follow up of tendon injuries. The ultrasound propagation theory predicts that the SOS is determined by the effective stiffness, mass density and Poisson’s ratio of the propagating medium. ...