Article

OBJECTIVE: To evaluate the sensitivity and specificity of calcaneal quantitative
ultrasound (QUS) measurements for identifying osteoporosis determined by
dual-energy x-ray absorptiometry (DXA) at the hip in a spinal cord injury (SCI)
population. DESIGN: Cross-sectional retrospective review of data collected in the
bone health registry of persons with a disability. SETTING: Inpatients and
outpatients at a single acute rehabilitation hospital. PARTICIPANTS: A
convenience sample of 66 participants, both inpatients and outpatients, with a
spinal cord injury. METHODS: Calcaneal T scores were determined by ultrasound,
and bone density of the lumbar spine, total hip, and femoral neck were determined
by DXA. MAIN OUTCOME MEASUREMENTS: Right and left calcaneal QUS T scores and
right and left hip and femoral neck DXA T scores. RESULTS: Right and left hip DXA
T scores were strongly associated with corresponding right and left calcaneal QUS
T scores (right: r = .72, P < .001; left: r = .70, P < .001). Similar
associations were found when we evaluated femoral neck T scores and calcaneal QUS
T scores. Receiver operating characteristic analysis for evaluating QUS to
identify DXA-defined osteoporosis demonstrated an area under the curve of 0.81
for all participants (acute and chronic injury) and 0.68 for those with a chronic
SCI. CONCLUSIONS: A strong association exists between calcaneal QUS T scores and
bone density T scores at the hip measured by DXA. QUS may have a place in the
screening of people with SCI 1 year or more after their injury to evaluate their
bone status.
CI - Copyright (c) 2012 American Academy of Physical Medicine and Rehabilitation.
Published by Elsevier Inc. All rights reserved.

Langue : ANGLAIS