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Titolo:
DIFFERENTIAL-EFFECTS OF BONE-MINERAL CONTENT AND BONE AREA ON VERTEBRAL STRENGTH IN A SWINE MODEL
Autore:
YANG RS; WANG SS; LIN HJ; LIU TK; HANG YS; TSAI KS;
Indirizzi:
NATL TAIWAN UNIV,COLL MED,DEPT LAB MED,7 CHUNG SHAN S RD TAIPEI 10018TAIWAN NATL TAIWAN UNIV,COLL MED,DEPT LAB MED TAIPEI 10018 TAIWAN NATL TAIWAN UNIV,COLL MED,DEPT ORTHOPAED TAIPEI 10018 TAIWAN CHUN CHING GEN HOSP,DEPT ORTHOPAED TAICHUNG TAIWAN NATL TAIWAN UNIV,DEPT ORTHOPAED & NAVAL ARCHITECTURE & OCEAN ENGN TAIPEI 10764 TAIWAN
Titolo Testata:
Calcified tissue international
fascicolo: 1, volume: 63, anno: 1998,
pagine: 86 - 90
SICI:
0171-967X(1998)63:1<86:DOBCAB>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTITATIVE COMPUTED-TOMOGRAPHY; DUAL-PHOTON-ABSORPTIOMETRY; BODY COMPRESSIVE STRENGTH; BIOMECHANICAL COMPETENCE; NORMAL INDIVIDUALS; LUMBAR VERTEBRAE; TRABECULAR BONE; ASH DENSITY; PREDICTION; SPINE;
Keywords:
BONE MINERAL CONTENT; VERTEBRAL BONE AREA; COMPRESSIVE STRESS; FAILURE LOAD; STORED STRAIN ENERGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
R.S. Yang et al., "DIFFERENTIAL-EFFECTS OF BONE-MINERAL CONTENT AND BONE AREA ON VERTEBRAL STRENGTH IN A SWINE MODEL", Calcified tissue international, 63(1), 1998, pp. 86-90

Abstract

Since the biomechanical competence of a vertebral body may be closelyrelated to the content and distribution of the bone mineral, we have evaluated the effects of projected vertebral bone area (BA) and bone mineral parameters [bone mineral content (BMC) or bone mineral density (BMD)] on their biomechanical competence. We used dual-energy X-ray absorptiometry (DXA) to assess the bone mineral parameters of 36 swine thoracic vertebrae (T1-T12) and 15 lumbar vertebrae (L1-L5) after removal of the posterior elements. The failure load, compressive stress, and the stored strain energy of these vertebral bodies were assessed by a uniaxial compressive test using an MTS 810 testing system. Multiple regression analysis showed a significantly negative effect of BA and significantly positive effect or BMC on the biomechanical competence (compressive stress, r(2) = 0.67, P < 0.0001; failure load, r(2) = 0.75,P < 0,0001). However, the stored strain energy was only related to the BMC (r(2) = 0.35, P < 0.0001). The contributory effects of BMC and BA on the biomechanical competence were not equal. The effects of BMC was larger than BA in determining the failure load and stored strain energy, whereas the reverse was found for the compressive stress. Using the log-transformed parameters as the regressors resulted in similar results. These results suggested the differential effects of BA and BMCin determining the biomechanical competence of vertebral bodies. We recommend the use of both parameters instead of BMD alone for evaluation of the vertebral biomechanical competence.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/10/20 alle ore 14:40:38