title: Bone mineral changes in spine and proximal femur in individual obese women after laparoscopic sleeve gastrectomy: a short-term study.
abstract: BACKGROUND
  The aim of the study was to establish longitudinal bone changes in obese women after laparoscopic sleeve gastrectomy (LSG).
  
  
  METHODS
  Twenty-nine women at baseline mean age of 40.41 ± 9.26 years and with mean body mass index (BMI) of 43.07 ± 4.99 kg/m(2) were included in a 6-month study. Skeletal status at hip [femoral neck (FN) and total hip (TH)] and spine was assessed at baseline, as well as in 3 and 6 months after surgery. Body size was measured at baseline and follow-up (weight, height, BMI, and waist).
  
  
  RESULTS
  Baseline body weight was 117.5 ± 18.4 kg. The mean body weight and BMI decreased by 17.9 % during the first 3 months after surgery to obtain 28.4 % after 6 months. At 6 months, BMD decreased significantly for spine by 1.24 %, FN 6.99 %, and TH 5.18 %. The changes after 3 months in individual subjects showed that, in the majority of subjects, FN and TH BMD decreased significantly (in 52 % and 69 % of subjects, respectively), and in 24 % loss of BMD was found at the spine. After 6 months, the corresponding, significant decreases in individual subjects were found in 72 %, 86 %, and 38 % of woman, respectively. Those with a significant loss of FN BMD tended to lose more weight (30 ± 9.47 versus 23.25 ± 6.08 kg, p = 0.061) than others; women with a significant decrease of FN BMD lost more weight than those with no such decrease (30.43 ± 8.07 versus 15 ± 1.91 kg).
  
  
  CONCLUSIONS
  LSG proved efficient for body weight reduction, however, with a parallel decline in bone mineral density.
authors.affiliation: Metabolic Bone Diseases Unit, Department and Clinic of Internal Diseases, Diabetology and Nephrology, Medical University of Silesia in Katowice, ul 3-Maja 13/15, 41-800 Zabrze, Poland. osteolesna@poczta.onet.pl
authors.forename: Wojciech
authors.initials: W
authors.lastname: Pluskiewicz
authors.forename: Marek
authors.initials: M
authors.lastname: Bužga
authors.forename: Pavol
authors.initials: P
authors.lastname: Holéczy
authors.forename: Ladislav
authors.initials: L
authors.lastname: Bortlík
authors.forename: Vít
authors.initials: V
authors.lastname: Šmajstrla
authors.forename: Piotr
authors.initials: P
authors.lastname: Adamczyk
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D015992:Body Mass Index; D015519:Bone Density; D005260:Female; D005269:Femur / Q000378:metabolism*; D015391:Gastroplasty / Q000009:adverse effects / Q000379:methods; D006615:Hip; D006801:Humans; D010535:Laparoscopy; D008137:Longitudinal Studies; D009767:Obesity, Morbid / Q000378:metabolism / Q000601:surgery*; D013131:Spine / Q000378:metabolism*; D016896:Treatment Outcome