Table 4.
Adjacent facet joint degeneration in symptomatic and asymptomatic group by facet degeneration index using Grogan classification
| Variable | Symptomatic (n=46) | Asymptomatic (n=24) | p-value |
|---|---|---|---|
| Facet L4–5 | 7.58±3.74 | 5.66±2.61 | 0.041 |
| ≤3 | 2 (4.35) | 3 (12.5) | |
| 4–6 | 9 (19.57) | 18 (75.0) | |
| 7–9 | 29 (63.04) | 3 (12.5) | |
| 10–12 | 6 (13.04) | 0 | |
| Facet L5–S1 | 8.21±4.24 | 6.19±2.15 | 0.027 |
| ≤3 | 1 (2.17) | 2 (8.33) | |
| 4–6 | 7 (15.22) | 10 (41.67) | |
| 7–9 | 27 (58.70) | 11 (45.83) | |
| 10–12 | 11 (23.91) | 1 (4.17) |
Values are presented as mean±standard deviation or number (%).