Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ANISOTROPY OF THE ELASTIC-MODULUS OF TRABECULAR BONE SPECIMENS FROM DIFFERENT ANATOMICAL LOCATIONS
Autore:
AUGAT P; LINK T; LANG TF; LIN JC; MAJUMDAR S; GENANT HK;
Indirizzi:
UNIV ULM,DEPT ORTHOPAED RES & BIOMECH D-89081 ULM GERMANY UNIV CALIF SAN FRANCISCO,DEPT RADIOL,OSTEOPOROSIS & ARTHRIT RES GRP SAN FRANCISCO CA 94143
Titolo Testata:
Medical engineering & physics
fascicolo: 2, volume: 20, anno: 1998,
pagine: 124 - 131
SICI:
1350-4533(1998)20:2<124:AOTEOT>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFERENT SKELETAL SITES; MECHANICAL-PROPERTIES; CANCELLOUS BONE; PROXIMAL FEMUR; COMPUTED-TOMOGRAPHY; HIP FRACTURE; ASH DENSITY; PREDICTION; BEHAVIOR; WOMEN;
Keywords:
BIOMECHANICS; BONE STRUCTURE; BONE STRENGTH; OSTEOPOROSIS; QUANTITATIVE COMPUTED TOMOGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
P. Augat et al., "ANISOTROPY OF THE ELASTIC-MODULUS OF TRABECULAR BONE SPECIMENS FROM DIFFERENT ANATOMICAL LOCATIONS", Medical engineering & physics, 20(2), 1998, pp. 124-131

Abstract

To associate the mechanical anisotropy of trabecular bone with the relationship between bone mineral density (BMD) and mechanical properties, 97 cubic specimens of human trabecular bone were imaged with computed tomography. Bone cubes from the spine, the calcaneus, the distal, and the proximal femur were rested multidirectionally to measure their compressive stiffness and to calculate their ratios of mechanical anisotropy, The ultimate strength was determined in a destructive test in cephalo-caudal (c-c) direction. Compressive stiffness was largest in the c-c direction for the specimens from the spine, as well as the distal and the proximal femur, but not the calcaneus. Anisotropy ratios inc-e direction were larger at the distal femur and the spine than in the proximal femur. The predictive power of BMD for the mechanical properties varied with anatomical location and strongly depended on the loading direction. While at the spine the c-c stiffness was highly correlated to BMD (r(2) = 0.73), the perpendicular directions showed only modest correlations (r(2) < 0.53), The correlations of mechanical properties with BMD were greatest at locations where the anisotropy was less pronounced (proximal femur) or rather uniform (spine). The data suggest that BMD can be most successfully applied to determine the mechanical properties in the principal loading direction, which from a clinical perspective may be most relevant. (C) 1998 IPEM. Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 08:33:04