Viscoelastic Properties of the Hindfoot Bones:

Foot & Ankle Orthopaedics

MichelleSon¹ 

关键词: Bone viscoelasticity;    hindfoot;    stress relaxation;    compression;    load relaxation;    trabecular;    subchondral bone;   

DOI  :  10.1177/2473011418S00459

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:HindfootIntroduction/Purpose:Obtaining and maintaining compression at an arthrodesis site is a key factor in achieving successful bony union. Bones, like other collagen containing tissues, are known to exhibit viscoelastic properties that may lead to stress relaxation at the arthrodesis site. The viscoelastic properties of the hindfoot bones when subjected to compression (as occurs during fusion surgery) are not known. The objective of this study was to quantify the viscoelastic properties of hindfoot bones under compression by measuring the time course of stress relaxation.Methods:19 cadaveric human bone cubes 10 mm on each side consisting of trabecular and subchondral bone were cut from the hindfoot bones including the talus, calcaneus, and distal tibia. Each cube was scanned with micro computed tomography (µCT) to quantify bone volume/total volume ratio (BV/TV), trabecular thickness, trabecular separation, trabecular number, and connectivity density. Each specimen was then immersed in a saline...

【 授权许可】

CC BY