Table 2:
New fracture classification
| Time Period | Cortoss |
PMMA |
||||||
|---|---|---|---|---|---|---|---|---|
| Adjacent Fracture | Non-Adjacent Fracture | Treatment-Level Fracturea | Total | Adjacent Fracture | Non-Adjacent Fracture | Treatment-Level Fracturea | Total | |
| No. (%) of patients with ≥1 additional fractureb | 30 (18.5%) | 26 (16.0%) | 3 (1.9%) | 45 (27.8%) | 19 (20.2%) | 16 (17.0%) | 2 (2.1%) | 30 (31.9%) |
| No. of fractures | 43 | 32 | 4 | 79 | 21 | 24 | 2 | 47 |
| <30 days | 13 (30.2%) | 7 (21.9%) | 1 (25.0%) | 21 (26.6%) | 6 (28.6%) | 4 (16.7%) | 2 (100.0%) | 12 (25.5%) |
| 30 days to 1 yr (day 365) | 28 (65.1%) | 21 (65.6%) | 3 (75.0%) | 52 (65.8%) | 12 (57.1%) | 12 (50.0%) | 0 (0.0%) | 24 (51.1%) |
| 1 yr (day 366) to 2 yr (day 730) | 1 (2.3%) | 2 (6.3%) | 0 (0.0%) | 3 (3.8%) | 3 (14.3%) | 7 (29.2%) | 0 (0.0%) | 10 (21.3%) |
| >2 yr | 1 (2.3%) | 2 (6.3%) | 0 (0.0%) | 3 (3.8%) | 0 (0.0%) | 1 (4.2%) | 0 (0.0%) | 1 (2.1%) |
| No. (%) of first-time patients with ≥1 additional fracturec | 7 (10.3%) | 6 (8.8%) | 2 (2.9%) | 12 (17.6%) | 8 (18.2%) | 6 (13.6%) | 1 (2.3%) | 12 (27.3%) |
a
Further collapse of treated fracture.
b
Patients experiencing ≥1 additional fracture are counted once within each fracture category.
c
Patients originally treated at 1 level who had not had previous fractures (Cortoss, n = 68; PMMA, n = 44).