Radiographic follow-up and reoperation rates.
| Total Patients(n = 47) | Decompression Alone Cohort (n = 27) | Decompression + Fusion Cohort (n = 20) | P Value | |
| Mean radiographic follow-up, mo | 17.9 | 19.7 | 15.3 | 0.83 |
| Reoperations, % (n) | ||||
| ≥1 Reoperation | 34.0% (16) | 51.9% (14) | 10% (2) | 0.004 |
| 2 Reoperations | 12.8% (6) | 18.5% (5) | 5% (1) | 0.22 |
| Indications for initial reoperation, % (n) | ||||
| Axial pain | 27.7% (13) | 78.6% (11) | 10% (2) | 0.025 |
| Progressive deformity | 14.9% (7) | 50% (7) | 0% (0) | 0.015 |
| Neurological decline | 6.4% (3) | 21.4% (3) | 0% (0) | 0.25 |
| Recurrence of deep infection | 8.5% (4) | 21.4% (3) | 5% (1) | 0.63 |
| Hardware failure | 4.3% (2) | 0% (0) | 10% (2) | 0.18 |
| Goals of initial reoperation, % (n) | ||||
| Further decompression | 6.4% (3) | 7.4% (3) | 0% (0) | 0.25 |
| Fusion | 14.3% (7) | 29.6% (7) | 0% (0) | 0.015 |
| Further decompression + fusion | 8.5% (4) | 14.8% (4) | 0% (0) | 0.13 |
| Debridement of recurrent infection | 0% (0) | 0% (0) | 5% (1) | 0.46 |
| Revision of hardware | 4.3% (2) | 0% (0) | 10% (2) | 0.18 |
| Indications for second reoperation, % (n) | ||||
| Axial pain | 8.5% (4) | 14.8% (4) | 0% (0) | 0.13 |
| Progressive deformity | 4.3% (2) | 7.4% (2) | 0% (0) | 0.5 |
| Recurrence of deep infection | 6.4% (3) | 7.4% (2) | 5% (1) | 1 |
| Pseudarthrosis | 2.1% (1) | 3.7% (1) | 0% (0) | 1 |
| Hardware failure | 2.1% (1) | 3.7% (1) | 0% (0) | 1 |
| Goals of second reoperation, % (n) | ||||
| Further decompression | 0% (0) | 0% (0) | 0% (0) | 1 |
| Fusion | 6.4% (3) | 11.1% (3) | 0% (0) | 0.25 |
| Further decompression + fusion | 0% (0) | 0% (0) | 0% (0) | 1 |
| Debridement of recurrent infection | 6.4% (3) | 7.4% (2) | 5% (1) | 1 |
| Revision of hardware | 0% (0) | 0% (0) | 0% (0) | 1 |