Table 2. Spine surgeons’ Familiarity with vacuum disc phenomenon and frequency of intraoperative observation.
1. How familiar are you with the concept of a “vacuum disc” as a sign of end-stage lumbar degenerative disc disease on a Likert scale 1–10?
| |||
|---|---|---|---|
| 2. How often do you encounter a hollow disc during routine lumbar microdiscectomy? | |||
| 1. Never | |||
| 2. Occasionally (<25% of cases) | |||
| 3. Often (25%–75% of cases) | |||
| 4. Practically all the time (>75% of cases) | |||
| Response | Frequency | Percent | Cumulative percent |
| Never | 43 | 15.8 | 15.8 |
| < 25% | 187 | 68.5 | 84.2 |
| 25—75% | 42 | 15.4 | 99.6 |
| >75% | 1 | 0.4 | 100.0 |
| 273 | 100.0 | ||
3. How often do you find a vacuum disc shown below on intraoperative fluoroscopy during routine lumbar endoscopic transforaminal discectomy as a sign of endstage degenerative disc disease on a Likert scale 1–10?
