Table 3.
Preoperative and postoperative UCLA grading scale in three groups
| Grade | Group A | Group B | Group C | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Preoperative | Final follow-up | DegenerationΔ | Preoperative | Final follow-up | DegenerationΔ | Preoperative | Final follow-up | DegenerationΔ | |
| I | 34 | 24 | 0 | 37 | 26 | 0 | 32 | 23 | 0 |
| II | 7 | 16 | 10 | 8 | 17 | 11 | 8 | 16 | 9 |
| III | 0 | 1 | 1 | 0 | 2 | 2 | 0 | 1 | 1 |
| IV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
DegenerationΔ indicates one or more grades degeneration compared with preoperative and final follow up. The rate of ASD in groups A, B, and C were 26.8%, 28.9% and 25.0%, respectively. The statistical values were χ2 = 0.163 and P = 0.922