下肢肢体软组织的体内压痕试验

In vivo indentation of lower extremity limb soft tissues.

作者信息

Silver-Thorn M B

机构信息

Department of Biomedical Engineering, Marquette University, Milwaukee, WI 53201, USA.

出版信息

IEEE Trans Rehabil Eng. 1999 Sep;7(3):268-77. doi: 10.1109/86.788464.

DOI:10.1109/86.788464

PMID:10498373

Abstract

In vivo rate-controlled indentation tests were conducted on the soft tissues of the residual limbs of five individuals with trans-tibial amputation and the right calf of five nonamputees. Force relaxation trials were also conducted. The cyclic indentation tests indicated that the bulk soft tissue response to compressive load is nonlinear and rate-dependent. Inter- and intrasubject stiffness variations were observed. The force relaxation studies indicated that approximately 55-95% relaxation may occur, with equilibration typically occurring in less than 60 s. Most of this relaxation (35-80%) occurred within 5 s after loading.

摘要

对五名经胫骨截肢者残肢的软组织以及五名非截肢者的右小腿进行了体内速率控制压痕试验。还进行了力松弛试验。循环压痕试验表明，大块软组织对压缩载荷的响应是非线性的且与速率相关。观察到了个体间和个体内的刚度变化。力松弛研究表明，可能会发生约55 - 95%的松弛，平衡通常在不到60秒内达到。这种松弛的大部分（35 - 80%）发生在加载后5秒内。