Table 2.
Surgical outcomes of all cases stratified per surgeon
| Characteristic | PTED |
Microdiscectomy | |||
|---|---|---|---|---|---|
| Senior surgeon | LC surgeon 1 | LC surgeon 2 | LC surgeon 3 | ||
| Duration of surgery | 29.7 ± 11.3 | 51.5 ± 14.5*,† | 69.3 ± 22.2*,† | 54.2 ± 17.0*,† | 33.2 ± 13.4* |
| Estimated blood loss < 10 mL | 106 (76.3)* | 19 (61.3)* | 26 (61.3)* | 26 (63.4)* | 68 (27.3)* |
| Conversion to microdiscectomy | 2 | 2 | 0 | 3 | - |
| Dural tear | 0 | 0 | 0 | 0 | 8 (3.2) |
| Nerve root injury | 0 | 0 | 0 | 0 | 1 (0.4) |
| Wound infection | 0 | 0 | 0 | 0 | 3 (1.2) |
| Repeated surgery within 1 year | 3 (2.1) | 15 (17.4)*,† | 1 (3.1) | 5 (11.6) | 14 (5.6)* |
Values are presented as mean±standard deviation or number (%).
PTED, percutaneous transforaminal endoscopic discectomy; LC, learning curve.
*
p<0.05 between microdiscectomy and one of the senior and/or LC surgeons.
†
p<0.05 between the LC surgeon performing and the senior surgeon.