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Background: Bariatric surgery (BS) can lead to bone loss and an increased fracture risk., Methods: To determine the morphometric vertebral fracture (MVF) prevalence, and its relationship with bone mineral density (BMD), and biomarker's turnover after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG), we analyzed post-surgery X-rays of the spine in 80 patients (88% female, 51% RYGB, age 41.2 [6.8] years) from 117 participants' retrospective cohort (1-2 years, >2 and <5 years, and >5 years). We still analyzed body composition and BMD by dual-energy X-ray absorptiometry and bone parameters., Results: MVF prevalence was 17.5% (14/80), with no statistical difference between groups (p = 0.210). RYGB group had a higher prevalence of secondary hyperparathyroidism (SHPT) (PTH ≥ 65 pg/ml; 18.4% vs 7.8%, respectively, p = 0.04), PTH (61.3 vs 49.5 pg/ml, p = 0.001), CTX (0.766 [0.29] ng/ml vs 0.453 [0.30] ng/ml, p = 0.037), and AP (101.3 [62.4] U/L vs 123.9 [60.9] U/L, p = 0.027) than the SG group. Up to 5 years postoperatively, RYGB had a lower total (1.200 [0.087] vs 1.236 [0.100] g/cm 2 , p = 0.02), femoral neck (1.034 [0.110] vs 1.267 [0.105], p = 0.005), and total femur BMD (1.256 [0.155] vs 1.323 [0.167], p = 0.002) than SG group. We found no statistically significant difference between the MFV (+) and MVF (-) groups regarding age, sex, BMI, surgery time, BMD, or bone and metabolic parameters, including leptin., Conclusion: We found a high prevalence of MVF after BS with no differences between RYGB and SG., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Purpose: Evaluate the differences between surgical techniques in the modifications of body composition and the interference in skeletal muscle health, risk of sarcopenia, and reduced physical performance., Materials and Methods: This is a cross-sectional prospective study. A total of 71 patients, who underwent sleeve gastrectomy (SG) or underwent Roux-en-Y gastric bypass (RYGB). Both groups underwent anthropometric, laboratory analysis, body composition assessment, presence of sarcopenia, and physical performance tests., Results: The study found a higher percentage of weight loss and lower BMI in RYGB compared to SG. The other assessments of sarcopenia and physical performance showed similarity between the surgical models. Baumgartner index (7.9 kg/m 2 vs. 7.3 kg/m 2 ), FNIH (9.0 vs. 3.0), handgrip strength (27.3 kg vs. 25.2 kg), and SPPB (9.5 vs. 9.3). Leptin in the general SG group was higher than in RYGB (14.2 ng/ml vs. 8.0 ng/ml)., Conclusion: RYGB and SG have a similar presence of sarcopenia and physical performance. However, SG allows greater preservation of bone and muscle mass and is associated with higher values of leptin, which may represent protection from long-term postoperative complications., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Purpose: Bariatric surgery may lead to metabolic bone disease., Materials and Methods: In this cross-sectional study, we compared the prevalence of secondary hyperparathyroidism (SHPT), impact on bone mass and turnover markers, and serum leptin after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) in 117 patients (91% female, 51% RYGB, age 41.8 ± 6.7 years, time of surgery 4.3 ± 3.4 years) at different times (1-2 years, > 2 and < 5 years and ≥ 5 years). Body composition, bone mineral density (BMD), by dual-energy X-ray absorptiometry, and bone parameters (PTH, serum calcium, 25OHD, alkaline phosphatase (AP), C-telopeptide (CTX)) were analyzed., Results: Prevalence of SHPT (PTH ≥ 65 pg/ml) was 26%, RYGB > SG (18.4% vs. 7.8%, p = 0.039), despite similar 25OHD and calcium levels. Mean PTH, CTX, and AP were higher in RYGB vs. SG (61.3 ± 29.5 vs 49.5 ± 32.3 pg/ml, p = 0.001; 0.596 ± 0.24 vs. 0.463 ± 0.23 ng/ml; 123.9 ± 60.8 vs. 100.7 ± 62.0 U/l). There were 13.5% decreases in femoral neck BMD in all patients, over the study period. In the last group, the RYGB group showed greater bone loss in total body BMD (1.016 vs. 1.151 g/cm 2 , - 8.1%, p = 0.003) and total femur BMD (1.164 vs. 1.267 g/cm 2 , - 11.7%, p = 0.007). Mean leptin was lower in the RYGB vs. SG group, with no correlation with BMD in any site., Conclusion: Our data suggest a more deleterious role of RYGB on bone remodeling up to 5 years postoperatively in comparison with SG., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)