Effect of maturation and aging on material and ultrasonographic properties of equine superficial digital flexor tendon.

C. Gillis, N. Sharkey, Susan M Stover, R. R. Pool, Dennis Meagher, N. Willits

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Results of studies in human beings and other species have indicated that aging significantly influences the strength, modulus of elasticity, and energy storage ability of tendon. We wanted to determine the effects of aging on the material and ultrasonographic properties of equine superficial digital flexor (SDF) tendon. Ultrasonographic measurements of left forelimb SDF tendon cross-sectional area and mean echogenicity were made in 23 standing horses ranging in age from 2 to 23 years. All horses had not been in work for a minimum of 6 months prior to the study. After euthanasia, left forelimb bone-muscle-tendon-bone specimens were mounted in a materials testing system. The SDF tendon was cyclically loaded sinusoidally 100 times at 0.5 Hz from 1.5 to 5.0% strain, then was submitted to 10-minute creep-and-stress relaxation tests. Modulus of elasticity, load at 3% strain, and creep-and-stress relaxation were determined for each specimen. A significant positive correlation was found between elastic modulus and age. Correlation was not found between age and SDF tendon cross-sectional area or mean echogenicity. When 2-year-old horses were compared with older horses, the latter had tendons with a significantly (P = 0.007) greater modulus of elasticity. The authors conclude that increasing age through maturity is associated with a corresponding increase in equine SDF tendon elastic modulus.

Original languageEnglish (US)
Pages (from-to)1345-1350
Number of pages6
JournalAmerican Journal of Veterinary Research
Volume56
Issue number10
StatePublished - Oct 1995

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tendons
Tendons
Horses
Elastic Modulus
horses
modulus of elasticity
stress relaxation
Forelimb
forelimbs
bones
materials testing
Materials Testing
Bone and Bones
Euthanasia
euthanasia
Exercise Test
Muscles
muscles
energy

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Effect of maturation and aging on material and ultrasonographic properties of equine superficial digital flexor tendon. / Gillis, C.; Sharkey, N.; Stover, Susan M; Pool, R. R.; Meagher, Dennis; Willits, N.

In: American Journal of Veterinary Research, Vol. 56, No. 10, 10.1995, p. 1345-1350.

Research output: Contribution to journalArticle

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