TABLE 2.
Operative Details
| Case | Levels | Medial Facetectomy | Defect location | Defect Size | Lumbar Drain | Neurectomy | Sling | Duration (h:m) | EBL | MEP/SSEP changes |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | T6-7 | T6-7 | Ventral | 1.5 cm | Yes | No | Bovine Pericardium | 4:00 | 150 mL | None |
| 2 | T5-6 | None | Ventral | 1.5 cm | No | No | Bovine Pericardium | 4:10 | 100 mL | None |
| 3 | T4-6 | T4-6 | Ventral | 2 cm | No | Bilateral T5 roots | Bovine Pericardium | 4:07 | 800 mL | Improved MEP in LLE |
| 4 | T6-7 | T6-7 | Ventral | 1.5 cm | No | No | Bovine Pericardium | 4:15 | 100 mL | Reduced MEP in LLE |
| 5 | C7-T2 | T1-T2 | Left Lateral | n/a | No | No | Bovine Pericardium | 4:41 | 350 mL | Improved MEP/SSEP LLE |
EBL, estimated blood loss; LLE, left lower extremity; MEP, motor evoked potentials; SSEP: somatosensory evoked potentials