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Current role for bone absorptiometry.

Christian Roux1, Karine Briot1

  • 1Inserm U1153, Université Paris Descartes, 75006 Paris, France; Département de Rhumatologie, Hôpital Cochin, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France.

Joint Bone Spine
|June 11, 2016
PubMed
Summary
This summary is machine-generated.

Dual-energy X-ray absorptiometry (DXA) measures bone mineral density (BMD), crucial for managing osteoporosis. Its interpretation has evolved significantly over two decades for diagnosis and treatment.

Keywords:
Dual-energy X-ray absorptiometryFractureOsteoporosisTreatment monitoring

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Area of Science:

  • Orthopedics
  • Radiology
  • Bone Biomechanics

Background:

  • Bone mineral density (BMD) measurement via dual-energy X-ray absorptiometry (DXA) is vital for managing bone fragility, particularly postmenopausal osteoporosis.
  • Areal BMD (aBMD) is a validated marker of bone mechanical strength, significantly contributing to femur (70%) and spine (40%) strength.

Purpose of the Study:

  • To review the evolution of DXA indications and interpretation in osteoporosis management.
  • To highlight the ongoing importance of aBMD in assessing bone health and fragility.

Main Methods:

  • Review of experimental biomechanical studies on bone strength.
  • Analysis of changes in DXA usage and interpretation guidelines over 20 years.

Main Results:

  • Areal BMD is a primary determinant of bone mechanical strength.
  • Significant changes in DXA's role in osteoporosis diagnosis, prognosis, and treatment have occurred since 1994.

Conclusions:

  • DXA remains a cornerstone in managing osteoporosis and bone fragility.
  • Evolving interpretation of DXA results is critical for accurate patient assessment and effective treatment strategies.