Low bone mass and severity of cholestasis affect fracture risk in patients with primary biliary cirrhosis

Gastroenterology. 2010 Jun;138(7):2348-56. doi: 10.1053/j.gastro.2010.02.016. Epub 2010 Feb 20.

Abstract

Background & aims: The influence of osteoporosis and liver disease on fracture risk is not well characterized in patients with primary biliary cirrhosis (PBC). We studied a large series of women with PBC to assess the prevalence and risk factors for fractures and the fracture threshold.

Methods: In female patients with PBC (n = 185; age, 55.7 +/- 0.7 years; range 28-79 years), age, duration of PBC, menopausal status, and histologic stage and severity of liver disease were assessed. Vertebral and non-vertebral fractures were recorded in 170 and 172 patients, respectively. Osteoporosis and osteopenia were diagnosed based on densitometry analysis.

Results: The prevalences of vertebral, non-vertebral, and overall fractures were 11.2%, 12.2%, 20.8%, respectively. Osteoporosis was significantly more frequent in patients with PBC than in normal women. Osteoporosis was associated with age, weight, height, histologic stage, severity, and duration of liver damage; fractures were associated with osteoporosis, menopause, age, and height but not with severity of PBC. Osteoporosis was a risk factor for vertebral fracture (odds ratio [OR], 8.48; 95% confidence interval [CI]: 2.67-26.95). Lumbar T score <-1.5 (OR, 8.27; 95% CI: 1.84-37.08) and femoral neck T score <-1.5 (OR, 6.83; 95% CI: 1.48-31.63) were significant risk factors for vertebral fractures.

Conclusions: Fractures, particularly vertebral fractures, are associated with osteoporosis, osteopenia, and T scores less than -1.5, whereas osteoporosis and osteopenia are associated with the severity of liver damage. Patients with T scores less than -1.5 might require additional monitoring and be considered for therapy to prevent fractures.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Bone Density*
  • Cholestasis / complications*
  • Female
  • Fractures, Bone / epidemiology
  • Fractures, Bone / etiology*
  • Humans
  • Liver Cirrhosis, Biliary / complications*
  • Middle Aged
  • Osteoporosis / epidemiology
  • Prevalence
  • Risk Factors