Figure 1.

Incidence of vertebral fractures (VFs) over 4 years. Thirty VFs of 298 patients were observed for a total of 852 person-years over the study period. (A) The incidence of VFs was 4.7% at 2 years and 13.6% at 4 years. (B) This resulted in a total of 30 fractures, most commonly at vertebra L1: 24 VFs were Genant grade 1 and 6 VFs were grade 2. Error bars represent the mean (SD).

Kang et al. Arthritis Research & Therapy 2014 16:R124   doi:10.1186/ar4581
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