Table 1 Summary of patient demographics and the results of revision ACAF after initial posterior surgery for cervical OPLL
Variable | Value |
|---|---|
Sex | |
 Male | 6 |
 Female | 4 |
Age | 62.1 ± 8.0 (52–78) |
Previous pst op | |
 Laminectomy | 4 |
 Laminoplasty | 4 |
 Decompression | 2 |
Mean interval btwn initial op and revision, months | 78.0 ± 48.2 (5–180) |
Type of the ossification | |
 Continuous | 4 |
 Segmental | 3 |
 Mixed | 3 |
K-line | |
 Minus | 6 |
 Plus | 4 |
Mean op time, min | 179.3 ± 41.8 (120–240) |
Mean blood loss, ml | 432.5 ± 198.3 (225–850) |
Complications, number of patients | |
 CSF leakage | 1 |
 C5 palsy | 0 |
 Postoperative hematoma | 0 |
 Implant complication | 0 |