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Ttypes and numbers of complications in AA and PA.
| Complications | AA | PA | Total |
|---|---|---|---|
| Screw replantation and dislocation | 16 | 3 | 19 |
| CSF leakage | 0 | 1 | 1 |
| Spinal cord injury | 1 | 1 | 2 |
| Superior laryngeal nerve injury | 4 | 0 | 4 |
| Pharyngalgia | 2 | 0 | 2 |
| Wound infection | 0 | 3 | 3 |
| Urinary infection | 1 | 0 | 1 |
| Liquidizing | 1 | 0 | 1 |
| Redisplacement | 2 | 0 | 2 |
| Venous plexus bleeding | 0 | 5 | 5 |
| Respiratory failure | 2 | 0 | 2 |
| Cardiac arrest/infarction | 1 | 1 | 2 |
| Total | 30 | 14 | 44 |
AA, anterior approach; PA, posterior approach; CSF, cerebrospinal fluid.
