Ultrasound measurements of calcaneus for estimation of skeletal status in patients with inflammatory bowel disease.

Abstract:

BACKGROUND:Patients with inflammatory bowel disease (IBD) are at risk of developing metabolic bone disease. In diagnosing osteoporosis, bone mineral density (BMD) measurements play a key role. Our aims in this study were to assess the skeletal status with quantitative ultrasound (QUS) and to evaluate the ability of this method to predict BMD as measured by dual-energy X-ray absorptiometry (DXA) in IBD patients. METHODS:Altogether 53 patients with Crohn disease (CD) and 57 with ulcerative colitis (UC) were studied by using a Lunar Achilles ultrasound bone densitometer. The ultrasound variables are broadband ultrasound attenuation (BUA) and speed of sound (SOS). The lumbar spine, femoral neck, and total body BMD were measured with DXA. The age- and sex-adjusted values (Z-scores) were obtained by comparison with age- and sex-matched normal values. RESULTS:In CD patients Z-scores for both BUA and SOS were significantly less than zero, and Z-score for SOS was significantly lower than that for UC patients. Z-scores for BMD measured with DXA were significantly lower at all measurements in patients with CD. QUS and DXA measurements were significantly correlated. However, the agreement between the measurements in each individual patient was poor. Body mass index (BMI) was a major determinant for both BUA and SOS. In CD patients low QUS variables were associated with corticosteroid therapy, and both CD and UC patients with previous fractures had low SOS values. CONCLUSIONS:Our study indicates that QUS and DXA are not interchangeable methods for estimation of bone status. QUS variables are insufficient to provide accurate prediction of BMD values and should therefore not be recommended as a screening test for osteoporosis in IBD patients.

journal_name

Scand J Gastroenterol

authors

Jahnsen J,Falch JA,Mowinckel P,Aadland E

doi

10.1080/003655299750025723

subject

Has Abstract

pub_date

1999-08-01 00:00:00

pages

790-7

issue

8

eissn

0036-5521

issn

1502-7708

journal_volume

34

pub_type

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