Title :
In vivo indentation of lower extremity limb soft tissues
Author :
Silver-Thorn, M.B. ; Tonuk, E. ; Kemp, J.
Author_Institution :
Dept. of Biomed. Eng., Marquette Univ., Milwaukee, WI, USA
Abstract :
In vivo rate-controlled indentation tests, force relaxation trials, and creep studies were conducted on the soft tissues of the residual limbs of individuals with trans-tibial amputation. The cyclic indentation tests indicated that the bulk soft tissue response to compressive load is nonlinear and rate-dependent. The force relaxation studies indicated that substantial relaxation (35-80%) may occur, with equilibration typically occurring in less than 60 seconds. Most of this relaxation (20-70%) occurred within 5 seconds after loading. Tissue creep was also marked, ranging from 20 to 110% over two minutes
Keywords :
biological tissues; biomechanics; creep; indentation; relaxation; bulk soft tissue response; compressive load; cyclic indentation tests; equilibration; force relaxation trials; in vivo indentation; lower extremity limb soft tissues; nonlinear rate-dependent response; residual limbs; soft tissues; tissue biomechanics; Biological tissues; Creep; Elasticity; Extremities; In vivo; Nonlinear equations; Viscosity;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802715
