Skeletal Radiology

, Volume 40, Issue 7, pp 905–911 | Cite as

Association of the presence of bone bars on radiographs and low bone mineral density

  • Michael J. Pitt
  • Sarah L. Morgan
  • Robert Lopez-Ben
  • Rebecca E. Steelman
  • Nancy Nunnally
  • Leandria Burroughs
  • Naomi Fineberg
Scientific Article

Abstract

Objective

Bone bars (BB) are struts of normal trabecular bone that cross the medullary portions of the metaphysis and diaphysis at right angles to the long axis of the shaft. The purpose of this investigation was to determine whether the presence of bone bars (BB) identified on radiographs of the proximal femurs and tibia, predict lower bone mineral density (BMD) as evaluated with dual-energy x-ray absorptiometry (DXA) in the lumbar spine, total hip, or femoral neck.

Materials and methods

A total of 134 sequential DXA patients underwent radiography of the pelvis, hips, and both knees. The radiographs were evaluated for the presence of BB by two musculoskeletal radiologists who were blinded to DXA results. A t test was used to evaluate the relationship of BB to BMD and a Chi-square test was used to determine if BB were equally distributed among the categories of normal BMD, low bone mass (osteopenia), and osteoporosis.

Results

BB were associated with lower BMD at all measured sites. BB at the intertrochanteric and proximal tibial sites were the most predictive of low BMD while supraacetabular and distal femur BB were less predictive. Osteoporosis or osteopenia is seen in 60–91% of those with BB depending on the side and reader. It is only seen in about 40% of those without BB.

Conclusions

We conclude that the presence of BB suggest decreased BMD and when correlated with other clinical information, might support further evaluation of BMD.

Keywords

Bone bars Dual-energy x-ray absorptiometry Bone mineral density 

Notes

Acknowledgements

This study was supported by an unrestricted educational grant from Procter & Gamble.

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Copyright information

© ISS 2011

Authors and Affiliations

  • Michael J. Pitt
    • 1
    • 8
  • Sarah L. Morgan
    • 2
  • Robert Lopez-Ben
    • 3
  • Rebecca E. Steelman
    • 4
  • Nancy Nunnally
    • 5
  • Leandria Burroughs
    • 6
  • Naomi Fineberg
    • 7
  1. 1.Department of Radiology, School of MedicineUniversity of Alabama at BirminghamBirminghamUK
  2. 2.Departments of Nutrition Sciences and MedicineSchools of Health Professions, Medicine, and DentistryBirminghamUK
  3. 3.Department of Radiology, School of MedicineUniversity of Alabama at BirminghamBirminghamUK
  4. 4.University of AlabamaBirminghamUK
  5. 5.The UAB Osteoporosis Prevention and Treatment ClinicBirminghamUK
  6. 6.The UAB Osteoporosis Prevention and Treatment ClinicBirminghamUK
  7. 7.Department of Biostatistics, School of Public HealthUniversity of Alabama at BirminghamBirminghamUK
  8. 8.Department of Radiology, School of MedicineUniversity of Alabama at BirminghamBirminghamUK

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