Calcified Tissue International

, Volume 83, Issue 6, pp 368–379

Bone Volume Fraction Explains the Variation in Strength and Stiffness of Cancellous Bone Affected by Metastatic Cancer and Osteoporosis

  • Ara Nazarian
  • Dietrich von Stechow
  • David Zurakowski
  • Ralph Müller
  • Brian D. Snyder
Article

DOI: 10.1007/s00223-008-9174-x

Cite this article as:
Nazarian, A., von Stechow, D., Zurakowski, D. et al. Calcif Tissue Int (2008) 83: 368. doi:10.1007/s00223-008-9174-x

Abstract

Preventing nontraumatic fractures in millions of patients with osteoporosis or metastatic cancer may significantly reduce the associated morbidity and reduce health-care expenditures incurred by these fractures. Predicting fracture occurrence requires an accurate understanding of the relationship between bone structure and the mechanical properties governing bone fracture that can be readily measured. The aim of this study was to test the hypothesis that a single analytic relationship with either bone tissue mineral density or bone volume fraction (BV/TV) as independent variables could predict the strength and stiffness of normal and pathologic cancellous bone affected by osteoporosis or metastatic cancer. After obtaining institutional review board approval and informed consent, 15 patients underwent excisional biopsy of metastatic prostate, breast, lung, ovarian, or colon cancer from the spine and/or femur to obtain 41 metastatic cancer specimens. In addition, 96 noncancer specimens were excised from 43 age- and site-matched cadavers. All specimens were imaged using micro-computed tomography (micro-CT) and backscatter emission imaging and tested mechanically by uniaxial compression and nanoindentation. The minimum BV/TV, measured using quantitative micro-CT, accounted for 84% of the variation in bone stiffness and strength for all cancellous bone specimens. While relationships relating bone density to strength and stiffness have been derived empirically for normal and osteoporotic bone, these relationships have not been applied to skeletal metastases. This simple analytic relationship will facilitate large-scale screening and prediction of fracture risk for normal and pathologic cancellous bone using clinical CT systems to determine the load capacity of bones altered by metastatic cancer, osteoporosis, or both.

Keywords

OsteoporosisSkeletal metastasisCancellous boneMechanical propertyBone volume fractionBone mineral density

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Ara Nazarian
    • 1
    • 2
  • Dietrich von Stechow
    • 1
  • David Zurakowski
    • 4
  • Ralph Müller
    • 3
  • Brian D. Snyder
    • 1
    • 4
    • 5
  1. 1.Orthopedic Biomechanics Laboratory, Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonUSA
  2. 2.Institute for Biomedical EngineeringUniversity and ETH ZürichZürichSwitzerland
  3. 3.Institute for BiomechanicsETH ZürichZürichSwitzerland
  4. 4.Department of Orthopedic Surgery, Children’s Hospital BostonHarvard Medical SchoolBostonUSA
  5. 5.Orthopedic Biomechanics LaboratoryBeth Israel Deaconess Medical CenterBostonUSA