Table 5
Comparison of the pre- and postoperative grades of foraminal stenosis.
Postoperative grade of foraminal stenosis
Grade 0
Grade 1
Grade 2
Grade 3
Preoperative grade of Foraminal stenosis
Grade 1 (n=15)
6
9 (60%)
-
-
Grade 2 (n=21)
2
8
11 (52.4%)
-
Grade 3 (n=8)
0
0
3
5 (62.5%)