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Titolo:
Contributions of bone density and geometry to the strength of the human second metatarsal
Autore:
Muehleman, C; Lidtke, R; Berzins, A; Becker, JH; Shott, S; Sumner, DR;
Indirizzi:
Dr WM Scholl Coll Podiatr Med, Chicago, IL USA Dr WM Scholl Coll Podiatr Med Chicago IL USA odiatr Med, Chicago, IL USA Rush Presbyterian St Lukes Med Ctr, Dept Orthoped Surg, Chicago, IL 60612 USA Rush Presbyterian St Lukes Med Ctr Chicago IL USA 60612 ago, IL 60612 USA Rush Presbyterian St Lukes Med Ctr, Biostat Unit, Dept Neurosurg, Chicago,IL 60612 USA Rush Presbyterian St Lukes Med Ctr Chicago IL USA 60612 cago,IL 60612 USA Rush Presbyterian St Lukes Med Ctr, Dept Anat, Chicago, IL 60612 USA Rush Presbyterian St Lukes Med Ctr Chicago IL USA 60612 ago, IL 60612 USA
Titolo Testata:
BONE
fascicolo: 5, volume: 27, anno: 2000,
pagine: 709 - 714
SICI:
8756-3282(200011)27:5<709:COBDAG>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTITATIVE COMPUTED-TOMOGRAPHY; BODY COMPRESSIVE STRENGTH; STRESS-FRACTURES; TRABECULAR BONE; MECHANICAL-PROPERTIES; MINERAL DENSITY; PHYSICAL-PROPERTIES; MASS MEASUREMENTS; RAT FEMUR; WOMEN;
Keywords:
densitometry; fracture; metatarsal; peripheral quantitative computed tomography (pQCT); bone density; bone strength;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Muehleman, C Rush Med Coll, Dept Anat, Suite 507 AF,600 S Paulina, Chicago, IL 60612 USA Rush Med Coll Suite 507 AF,600 S Paulina Chicago IL USA 60612
Citazione:
C. Muehleman et al., "Contributions of bone density and geometry to the strength of the human second metatarsal", BONE, 27(5), 2000, pp. 709-714

Abstract

We investigated, at the whole bone level, the contribution of bone densityand geometry to the fracture load of the second metatarsal, a bone that isprone to stress fracture. Dual-energy X-ray absorptiometry (DXA) was used to determine the areal bone mineral density (BMD), projected area of bone, and bone mineral content. Peripheral quantitative computed tomography (pQCT) was used to determine the volumetric cortical bone mineral density (vCtBMD) and cross-sectional moment of interia. Various metatarsal linear dimensions were also measured. The load at failure in cantilever bending was determined. The only linear dimension that had a significant correlation with load at failure was the height of the metatarsal base (r(2) = 0.30, p = 0.008), Utilizing all of the information provided by DXA gave no greater indication of whole bone strength than just BMD alone (adjusted r(2) = 0.40, p = 0.001), Using all of the information provided by pQCT gave no greater indication of whole bone strength than just vCtBMD alone (r(2) = 0.46, p < 0.001), Volumetric cortical density and BMD were strongly correlated (r(2) = 0.81, p < 0.001), Our data suggest that, in the human second metatarsal, a variable such as material strength (as inferred from cortical density), and notgeometry, may be the major factor in determining cantilever load to failure. (C) 2000 by Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 16:07:45