Table 4 Fusion and subsidence rate between the allograft and PEEK groups
| Allograft (n = 53) | Peek (n = 35) | p-value | |
|---|---|---|---|
| Cephalad level | |||
| Fusion | 51 (98.1) | 35 (100) | 1.000 |
| Subsidence | 4 (7.7) | 8 (22.9) | 0.057 |
| Caudal level | |||
| Fusion | 49 (94.2) | 35 (100) | 0.270 |
| Subsidence | 8 (15.4) | 13 (37.1) | 0.020 |