Table 3.
Distribution of development of heterotopic ossifications (HO) among patients by the grade of HO
| Character | Rank | HO grade by Brooker classification (%) | p values | |||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| Sex | Male | 26.5 | 28.7 | 34.5 | 10.3 | 0.0478 |
| Female | 39.0 | 26.8 | 28.7 | 5.5 | ||
| Diagnosis of diseased hip | Coxarthrosis | 40.3 | 20.8 | 29.2 | 9.7 | 0.3278 |
| Femoral neck fracture | 33.6 | 28.4 | 32.1 | 5.9 | ||
| Others | 31.0 | 34.5 | 20.7 | 13.8 | ||
| Previous HO | Presence | 40.6 | 38.4 | 15.6 | 9.4 | 0.2830 |
| Absence | 34.1 | 26.8 | 32.1 | 7.0 | ||
| Surgical approach to the hip | Watson-Jones | 38.1 | 28.7 | 26.9 | 6.3 | 0.1738 |
| Hardinge-Bauer | 30.8 | 24.7 | 37.0 | 7.5 | ||
| Kind of implant | Ceramic-ceramic THR | 37.2 | 25.6 | 26.9 | 10.3 | 0.0093 |
| Partial prosthesis | 35.2 | 33.3 | 27.1 | 4.4 | ||
| TriboFit® system | 28.0 | 18.7 | 46.7 | 6.6 | ||