Patient Group | Group IA | Group C | Group IS | p-values |
---|---|---|---|---|
# of patients | 22 | 31 | 5 | Â |
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. |