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| Item | Value |
|---|---|
| Preoperative canal occupying ratio (%) | 64.0±15.0 |
| Postoperative canal occupying ratio (%) | 15.5±12.2* |
| Anterior sliding of OPLL mass (mm) | 5.79±1.34 |
| C2−C7 lordosis | |
| Preoperative | −2.17°±9.21° |
| Postoperative | −10.78°±9.07°* |
Negative values represent lordotic alignment. *, P<0.05, compared with preoperative data. OPLL, ossification of posterior longitudinal ligament.
