Relationship Between Achilles Tendon Mechanical Properties and Gastrocnemius Muscle Function

[+] Author and Article Information
C. L. Trestik, R. L. Lieber

Departments of Orthopaedics and AMES/Bioengineering and Biomedical Sciences Graduate Group, University of California San Diego, and Veterans Administration Medical Center, San Diego, CA 92161

J Biomech Eng 115(3), 225-230 (Aug 01, 1993) (6 pages) doi:10.1115/1.2895479 History: Received January 27, 1992; Revised September 14, 1992; Online March 17, 2008


Strain was measured along the length of frog (Rana pipiens) gastrocnemius muscle-tendon units (MTU). Maximum muscle tension (P0 ) was measured, and the MTU was passively loaded to P0 . Strain at P0 was measured at eight intervals along the tendon and aponeurosis and was approximately two percent for all regions except the aponeurosis region closest to the muscle fibers where it was about six percent. A computer model predicted sarcomere shortening of up to 0.5 μm due to tendon lengthening which demonstrates that tendons provide a more complex physiological function than simply transmitting muscle force to bones.

Copyright © 1993 by The American Society of Mechanical Engineers
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