Distribution of ossification type in patients with T-OPLL
| Type of ossification | No. of patients | ||
| Male | Female | Total | |
| Beaked | 8 | 20 | 28 |
| Linear | 4 | 8 | 12 |
| Continuous waveform | 2 | 6 | 8 |
| Continuous cylindrical | 0 | 2 | 2 |
T-OPLL, thoracic ossification of the posterior longitudinal ligament.