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Both restrictive and malabsorptive bariatric surgeries affect bone remodeling adversely and reduce bone density. In this population-based retrospective cohort study, investigators determined fracture risk in nearly 2100 obese patients who had undergone bariatric surgery compared with risk in >10,400 obese patients (matched to cases by factors such as age, sex, and body-mass index [BMI]) who had not undergone such surgery.
After a mean follow-up of 2.2 years, neither osteoporotic nor nonosteoporotic fractures occurred more commonly in patients who underwent bariatric surgery than in controls. However, trends for excess fracture risk 3 to 5 years after bariatric surgery and in patients who had greater postsurgical reductions in BMI were observ…