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Table 1: Previous fractures
Cortoss (n = 162) PMMA (n = 94) Total (n = 256)
No. of patients with any previous fractures^{^a} 56 (34.6%) 31 (33.0%) 87 (34.0%)
Total no. of levels with previous fractures^{^b} 106 60 166
No. of patients with any previous fractures (treated)^{^c} 20 (12.3%) 13 (13.8%) 33 (12.9%)
Total no. of levels with previous fractures (treated) 33 25 58
No. of patients with any previous fractures (untreated)^{^d} 39 (24.1%) 21 (22.3%) 60 (23.4%)
Total no. of levels with previous fractures (untreated)^{^e} 73 35 108
↵a Excludes pre-existing untreated fractures that were treated along with the acute fracture in the current study. Includes treated and untreated fractures other than the index treated levels.
↵b Includes all levels with previously treated fractures and all levels with previous untreated fractures, excluding those levels treated in the current study.
↵c No. and percentage of patients with any previous fractures treated with vertebral augmentation.
↵d Excludes untreated levels treated in the current study.
↵e Excludes levels treated in the current study.