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Baseline demographic and clinical characteristic
| Variable | Value (%) |
|---|---|
| Number of patients | 153 |
| Age (years) | 50.11 ± 7.48 |
| Sex | |
| Male | 51 |
| Female | 102 |
| Involved levels | |
| Two | 79 |
| Three | 74 |
| T value (spine) | 0.30 ± 1.03 |
| Follow-up (months) | 40.82 ± 15.63 |
| HO formation | 92(58.97%) |
| High-grade HO formation | 16(10.26%) |
| Bone loss | 84(53.85%) |
HO heterotopic ossification
