Table 5.
Status of osseous fusion in studied patients
| Number of patients | Number of levels | |
|---|---|---|
| Interbody spaces | ||
| Grade A | 5 | 5 |
| Grades B and C | 7 | 8 |
| Grade D | 10 | 11 |
| Posterolateral spaces | ||
| Grade A | 4 | 4 |
| Grades B and C | 8 | 12 |
| Grade D | 8 | 14 |
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