Document Detail


Three-dimensional distribution of bone density in the proximal humerus.
MedLine Citation:
PMID:  14740644     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Bone quality of the proximal humerus is important for the surgical treatment of proximal humeral fractures and rotator cuff tears. However, very few studies have evaluated the areal bone mineral density (BMD) of the proximal humerus. The aim of this study was to analyze the volumetric BMD (vBMD) using peripheral-quantitative-computed-tomography. Total, trabecular and cortical vBMD were determined separately for the proximal and distal half of the humeral head, the surgical neck and seven specific regions of interest. The greater tuberosity (GT) was divided into three regions, and the lesser tuberosity (LT) and articular surface (AS) were each divided into two regions. The proximal head showed a significantly higher trabecular (+ 46%) and cortical vBMD (+ 15%) than the distal one. The mean trabecular vBMD of AS was significantly higher (+ 80%), and the cortical vBMD was significantly lower (- 11%) than that of the tuberosities. In the proximal half of GT, trabecular vBMD was higher in the posterior than in the middle and anterior regions. Cortical vBMD was higher in middle region than in the anterior and posterior ones. In the distal half of GT, trabecular vBMD was significantly higher in the posterior than in the middle region, and cortical vBMD was significantly higher in the anterior than in the middle region. In one. These results point to bone sites that may provide stronger fixation for implants, reduce the risk of implant loosening, and therefore improve patient outcome.
Authors:
M J Tingart; M L Bouxsein; D Zurakowski; J P Warner; M Apreleva
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Calcified tissue international     Volume:  73     ISSN:  0171-967X     ISO Abbreviation:  Calcif. Tissue Int.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2004-01-23     Completed Date:  2004-07-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7905481     Medline TA:  Calcif Tissue Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  531-6     Citation Subset:  IM    
Affiliation:
Orthopaedic Biomechanics Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
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MeSH Terms
Descriptor/Qualifier:
Absorptiometry, Photon / methods
Aged
Aged, 80 and over
Bone Density*
Cadaver
Female
Humans
Humerus / metabolism*
Imaging, Three-Dimensional*
Male
Middle Aged
Reproducibility of Results
Tomography, X-Ray Computed / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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