Display options
Share it on

ISRN Rheumatol. 2012;2012:617535. doi: 10.5402/2012/617535. Epub 2012 Jun 17.

Prevalence and Risk Factors of Discordance between Left- and Right-Hip Bone Mineral Density Using DXA.

ISRN rheumatology

Aziza Mounach, Asmaa Rezqi, Imad Ghozlani, Lahsen Achemlal, Ahmed Bezza, Abdellah El Maghraoui

Affiliations

  1. Rheumatology Department, Military Hospital Mohammed V, P.O. Box 1018, Rabat, Morocco.

PMID: 22778990 PMCID: PMC3384949 DOI: 10.5402/2012/617535

Abstract

To determine the prevalence of significant left-right differences in hip bone mineral density (BMD), and the impact of this difference on osteoporosis diagnosis, we measured bilateral proximal femora using dual energy X-ray absorptiometry (DXA) in 3481 subjects (608 males, 2873 females). The difference between left and right hip was considered significant if it exceeded the smallest detectable difference (SDD) for any of the three hip subregions. Contralateral femoral BMD was highly correlated at all measuring sites (r = 0.92-0.95). However, significant left-right differences in BMD were common: the difference exceeded the SDD for 54% of patients at total hip, 52.1% at femoral neck, and 57.7% at trochanter. The prevalence of left-right differences was greater in participants >65 years. For 1169 participants with normal spines, 22 (1.9%) had discordant left-right hips in which one hip was osteoporotic; for 1349 patients with osteopenic spines, 94 (7%) had osteoporosis in one hip. Participants with BMI < 20 kg/m(2) were more likely to show major T-score discordance (osteoporosis in one hip and normal BMD in the other). Multiple regression analysis showed that the only significant statically parameter that persists after adjusting for all potential confounding parameters were age over 65 years.

References

  1. J Clin Densitom. 2000 Winter;3(4):319-24 - PubMed
  2. Osteoporos Int. 1997;7(6):564-9 - PubMed
  3. J Clin Densitom. 2000 Spring;3(1):57-61 - PubMed
  4. J Clin Densitom. 2006 Apr-Jun;9(2):210-6 - PubMed
  5. Osteoporos Int. 2006 Dec;17(12):1772-80 - PubMed
  6. Osteoporos Int. 2005 Dec;16(12):1742-8 - PubMed
  7. J Clin Densitom. 2007 Apr-Jun;10(2):165-9 - PubMed
  8. Osteoporos Int. 2008 Apr;19(4):385-97 - PubMed
  9. J Clin Densitom. 2006 Jan-Mar;9(1):15-21 - PubMed
  10. J Clin Densitom. 2004 Spring;7(1):37-44 - PubMed
  11. Br J Radiol. 1995 Apr;68(808):389-93 - PubMed
  12. J Clin Densitom. 2007 Apr-Jun;10(2):153-6 - PubMed
  13. Osteoporos Int. 2003 Jan;14(1):13-8 - PubMed
  14. Lancet. 2002 Jun 1;359(9321):1929-36 - PubMed
  15. Ann Rheum Dis. 2007 Feb;66(2):271-2 - PubMed
  16. Calcif Tissue Int. 1997 May;60(5):430-3 - PubMed
  17. J Clin Densitom. 2006 Oct-Dec;9(4):454-60 - PubMed
  18. Osteoporos Int. 2005 Jun;16(6):597-602 - PubMed
  19. J Clin Densitom. 2006 Jul-Sep;9(3):281-6 - PubMed

Publication Types