title: The prevention of bone fractures after liver transplantation: experience with alendronate treatment.
abstract: OBJECTIVE
  The aim of this study was to prevent fractures in the first postoperative year.
  
  
  METHODS
  We studied 59 patients (48 men, 11 women) aged 42.6+/-11.4 years, who underwent liver transplantation. All patients received oral alendronate 70 mg weekly and calcium 1 g and calcitriol 0.5 mug daily. Bone mineral density (BMD) was measured by dual-energy X-ray absorptiometry at the lumbar spine and proximal femur at baseline as well as at 6 and 12 months after transplantation for comparison with an historical control group (n=31). Spinal radiographs were obtained to assess vertebral fractures at the same time. Additionally, serum osteocalcin, serum parathyroid hormone (PTH), urinary deoxypyridinoline (DPD), and biochemical parameters were determined every 3 months.
  
  
  RESULTS
  At baseline, femoral total BMD of men was significantly greater than that of women (P<.05, .85+/-.1 vs .74+/-.1). A significant increase in BMD was observed at 12 months (P<.05), no patient developed a bone fracture. Comparison analysis of genders showed that there was a significant difference in favor of men (P<.05). The lumbar BMD, neck T-, and Z-scores were significantly higher among patients treated with alendronate than historical controls (P<.05). After 3 months, serum PTH was increased and serum osteocalcin and urinary DPD were reduced. No severe side effects from alendronate treatment were observed during the study.
  
  
  CONCLUSIONS
  A direct sign of the success of our study was no fracture observed during the first postoperative year. Alendronate should be considered for patients with low bone mass after liver transplantation.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Medical Faculty of Ege University, Bornova-Izmir, Turkey. atamaz_02@yahoo.com
authors.forename: F
authors.initials: F
authors.lastname: Atamaz
authors.forename: S
authors.initials: S
authors.lastname: Hepguler
authors.forename: Z
authors.initials: Z
authors.lastname: Karasu
authors.forename: M
authors.initials: M
authors.lastname: Kilic
authors.forename: Y
authors.initials: Y
authors.lastname: Tokat
mesh_terms: D000328:Adult; D019386:Alendronate / Q000627:therapeutic use*; D015519:Bone Density; D050071:Bone Density Conservation Agents / Q000627:therapeutic use*; D005260:Female; D005269:Femur / Q000033:anatomy & histology / Q000187:drug effects; D050723:Fractures, Bone / Q000517:prevention & control*; D006801:Humans; D016031:Liver Transplantation; D008297:Male; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000097:blood; D011183:Postoperative Complications / Q000517:prevention & control*
chemical_list: D050071:Bone Density Conservation Agents; D010281:Parathyroid Hormone; D019386:Alendronate