Ultrasonography gives directly but noninvasively elastic characteristic of human tendon in vivo

S. Fukashiro, M. Rob, Y. Ichinose, Y. Kawakami, T. Fukunaga

Research output: Contribution to journalArticlepeer-review

124 Citations (Scopus)


To obtain an insight into tendon elasticity during human movement, a real-time ultrasonography was applied to the contracting tibialis anterior muscle. The insertion point of fascicles onto the aponeurosis was clearly visualized, and its position relative to a fixed marker on the skin moved proximally (Δ1) according to the increasing dorsiflexion force (ΔF) with a fixed ankle joint. Notably, the Δ1 - ΔF relationship in the tendon was found to be quadratic in nature (ΔF = c Δ12; c=1.48 ∼ 2.24, r=0.985 ∼ 0.992, n=9) as has been reported in the isolated tendon, although the ΔF - Δ1 curves were slightly underestimated in comparison with the stiffness constant estimated from tendon architecture. This underestimation might be caused by changes in the height of the foot arch with the application of force.

Original languageEnglish
Pages (from-to)555-557
Number of pages3
JournalEuropean Journal of Applied Physiology and Occupational Physiology
Issue number6
Publication statusPublished - 1995 Nov 1
Externally publishedYes


  • F-L curve
  • Human tendon elasticity
  • Tibialis anterior muscle
  • Ultrasonography

ASJC Scopus subject areas

  • Physiology
  • Public Health, Environmental and Occupational Health


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