Type of revision after interspinous process device placement.
| Type of Revision | Across Implants | Within Implants | |||||
| Coflex | Superion | X-Stop | Overall, % (n) | Coflex | Superion | X-Stop | |
| Explant | 5.3% | 88.5% | 6.2% | 59.9% (226) | 40.0% | 67.1% | 28.6% |
| Revision interspinous implant | 7.1% | 88.1% | 4.8% | 22.3% (84 | 20.0% | 24.8% | 8.2% |
| Explant, decompression ± fusion | 16.7% | 31.5% | 51.9% | 14.3% (54 | 0.0% | 0.3% | 0.0% |
| Irrigation and debridement | 33.3% | 66.7% | 0.0% | 1.6% (6) | 6.7% | 1.3% | 0.0% |
| Unknown | 20.0% | 20.0% | 60.0% | 1.3% (5) | 3.3% | 0.3% | 6.1% |
| Implanted level above | 0.0% | 100.0% | 0.0% | 0.3% (1) | 0.0% | 0.3% | 0.0% |
| Microdiscectomy | 0.0% | 100.0% | 0.0% | 0.3% (1) | 30.0% | 5.7% | 57.1% |