Adverse events by study group.
| Adverse Event | Integrated Spacer and Plate, n | Anterior Spacer and Plate System, n |
| Dysphagia | 10 | 7 |
| Persistent (>3 mo) | 1 | 1 |
| Durotomy | 1 | 0 |
| Horner syndrome | 0 | 2 |
| Infection | ||
| Superficial | 2 | 0 |
| Deep | 0 | 0 |
| Additional surgery | 3 | 1 |
| Pseudofusion | 0 | 1 |
| Neurapraxia | 0 | 1 |