Highly increased risk of fracture in patients with myeloproliferative neoplasm

Abstract

The risk for hip and vertebral fracture was determined in 10,752 patients diagnosed with myeloproliferative neoplasms (MPN) in Sweden 1995–2015. The mean follow-up time were 6.34 years. Five percent developed hip fracture and 1.3% a vertebral fracture. There was a significant increased risk for fracture among the MPN patients compared with the Swedish population. The ratio of observed (obs) and expected (exp) number of hip fracture in all MPN patients, polycythemia vera (PV), essential thrombocythemia and MPN undetermined (MPNu) was 1.20 (95% confidence interval (CI): 1.10–1.31), 1.37 (95% CI: 1.19–1.58), 1.02 (95% CI: 0.87–1.19), and 1.28 (95% CI: 1.07–1.52), respectively. Corresponding figures for vertebral fractures were 1.94 (95% CI: 1.64–2.29), 2.09 (95% CI: 1.56–2.75), 1.50 (95% CI: 1.06–2.07) and 2.47 (95% CI: 1.77–3.35), respectively. Patients with MPN had an increased risk of hip and vertebral fracture, especially patients with PV and MPNu in comparison with the entire Swedish population.

Keywords:

• Myeloproliferative disorders
• polycythemia vera
• essential thrombocythemia
• fracture

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The study was supported by grants from FOU Western Region Sweden.