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Original Articles

Osteopenia with Normal Vitamin D Metabolites after Small-Bowel Resection for Crohn's Disease

, , , , , , & show all
Pages 691-696 | Received 16 Aug 1983, Accepted 01 Nov 1983, Published online: 30 Apr 2018
 

Abstract

Thirty-six unselected patients were investigated 3–24 years (mean, 7.8 years) after small-bowel resection for Crohn's disease (mean small intestinal resection, 105 cm). Iliac crest bone biopsies after in vivo tetracycline double-labelling showed a markedly reduced trabecular bone mass (controls, 0.25 ± 0.06; patients, 0.15 ± 0.05; p < 0.01). The average bone remodeling and osteoid mineralization was normal, and only two patients demonstrated signs of frank but slight osteomalacia. The mean serum levels of the three vitamin D metabolites 25-hydroxyvitamin D. 24,25-dihydroxyvitamin D, and 1,25-dihydroxyvitamin D were normal. The observed reduction in trabecular bone mass may theoretically be followed by an increased risk of spontaneous fractures.

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