Table II.
Incidence of HO by patient characteristic (n = 153).
| Characteristic | Total patients | Patients with HO | Incidence (%) |
|---|---|---|---|
| Prescribed NSAIDs | |||
| Yes | 78 | 19 | 24 |
| No | 72 | 15 | 21 |
| Prophylactic course∗ | 10 | 5 | 50 |
| Age (yr) | |||
| 16-65 | 116 | 20 | 17 |
| >65 | 37 | 14 | 38 |
| Gender | |||
| Male | 70 | 12 | 17 |
| Female | 83 | 22 | 27 |
| Mechanism of injury | |||
| Low energy | 99 | 23 | 23 |
| High energy | 49 | 11 | 22 |
| BMI | |||
| <18.5 | 0 | 0 | - |
| 18.5-24.9 | 33 | 5 | 15 |
| 25-29.9 | 29 | 5 | 17 |
| 30-34.9 | 14 | 3 | 21 |
| 35-40 | 7 | 2 | 29 |
| 40+ | 5 | 3 | 60 |
| ASA class | |||
| 1 | 76 | 14 | 18 |
| 2 | 50 | 12 | 24 |
| 3 | 26 | 8 | 31 |
| 4 | 0 | 0 | - |
| 5 | 0 | 0 | - |
HO, heterotopic ossification; NSAIDs, nonsteroidal anti-inflammatories; BMI, body mass index; ASA, American Society of Anesthesiologists.
∗
Patients were prescribed a 4-6 week course of NSAIDs.