Discordance in Diagnosis of Osteoporosis Using Spine and Hip Bone Densitometry

El Maghraoui, A.; Mouinga Abayi, D.A.; Rkain, H.; Mounach, A.

doi:10.1016/j.jocd.2006.12.003

« Previous Next »Journal of Clinical Densitometry
Volume 10, Issue 2 , Pages 153-156, April 2007

Discordance in Diagnosis of Osteoporosis Using Spine and Hip Bone Densitometry

Rheumatology and Physical Rehabilitation Department, Military Hospital Mohammed V, Rabat, Morocco

Received 7 November 2006; received in revised form 7 December 2006; accepted 8 December 2006. published online 02 February 2007.

Abstract

Diagnostic discordance for osteoporosis is the observation that the T-score of a patient varies between skeletal sites, falling into 2 different diagnostic categories identified by the World Health Organization classification system. Densitometrists and clinicians should expect that at least 4 of every 10 patients tested by dual-energy X-ray absorptiometry (DXA) to demonstrate T-score discordance between spine and total hip measurement sites. T-score discordance can occur for a variety of reasons related to physiologic and pathologic patient factors and the performance or analysis of DXA itself.

Key Words: Bone mineral density, concordance, dual-energy X-ray absorptiometry, osteoporosis