Table 4.
Subgroup analysis of patients with heterotopic ossifications
| Patient Group | Group IA | Group C | Group IS | p-values |
|---|---|---|---|---|
| # of patients | 22 | 31 | 5 | |
| Brooker grade I | 10 (45.5%) | 1 (3.2%) | 5 (100%) |
P = 0.006# ns+ p < 0.01§ P < 0.001 (I/II vs III/IV) |
| Brooker grade II | 9 (40.9 (%) | 5 (16.12%) | – |
P < 0.002# P < 0.001+ n.s.§ |
| Brooker grade III | 1 (4.6%) | 15 (48.4%) | – |
P < 0.002# P < 0.001+ n.s. (§) |
| Brooker grade IV | 2 (0.1%) | 10 (32.3%) | – | |
| HO < 1 year post trauma | 19 | 24 | 5 |
P = <.002# ns+ p < 0.01§ |
| HO > 1 year post trauma | 2 | 1 | – | n.s. |
| HO after revision surgery | 1 | 6 | – | n.s. |
(#) Comparison between combined (group C) and shaft fractures (group IS)
(+) Comparison between isolated articular (group IA) and combined articular and shaft fractures (group C)
(§) Comparison between isolated articular (IA) and shaft fractures (IS)