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Related Experiment Videos

Does bone change after biliopancreatic diversion?

Picard Marceau1, Simon Biron, Stéfane Lebel

  • 1Department of Surgery, Laval Hospital, Quebec City, Quebec, Canada. picard.marceau@chg.ulaval.ca

Journal of Gastrointestinal Surgery : Official Journal of the Society for Surgery of the Alimentary Tract
|October 26, 2002
PubMed
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Biliopancreatic diversion (BPD) surgery can cause bone changes, but with monitoring and supplements, bone health risks are manageable. Long-term studies show bone density is largely maintained, with overall fracture risk unchanged.

Area of Science:

  • Endocrinology
  • Orthopedics
  • Bariatric Surgery

Background:

  • Biliopancreatic diversion (BPD) is a bariatric surgery known to cause significant metabolic alterations.
  • Bone health is a critical concern following malabsorptive procedures like BPD.

Purpose of the Study:

  • To prospectively evaluate long-term bone changes after BPD surgery.
  • To identify factors predicting bone loss and assess overall fracture risk post-BPD.

Main Methods:

  • Prospective study of 33 patients undergoing BPD, with analysis at baseline, 4, and 10 years.
  • Inclusion of clinical, biochemical, bone mineral density, and iliac crest bone biopsy assessments.
  • Measurement of parathyroid hormone (PTH), vitamin D metabolites, bone-specific alkaline phosphatase (BAP), and osteocalcin.

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Main Results:

  • Increased bone turnover and mineralization observed post-BPD, with altered static bone measures.
  • Bone mineral density remained stable at the hip but decreased 4% at the lumbar spine over 10 years.
  • Preoperative factors like menopause and smoking, and postoperative elevated 1,25-dihydroxyvitamin D predicted bone loss.

Conclusions:

  • Bone is relatively tolerant to metabolic changes induced by BPD.
  • Close metabolic surveillance, appropriate supplementation (calcium, vitamin D), and nutritional support are crucial.
  • The benefits of BPD surgery outweigh the risks of postoperative bone disease when managed effectively.