Table 2.
The size, location and cause of the dural rupture
| Group | Size | Location | Cause of the tears | ||||
|---|---|---|---|---|---|---|---|
| ≦ 5 mm | > 5 mm | Central | Fringe | Drill | Rongeur | Dissector | |
| Dural patch | 12 | 0 | 2 | 10 | 6 | 4 | 2 |
| Bone wax | 11 | 0 | 3 | 8 | 5 | 5 | 1 |
| tolal | 23 | 0 | 8 | 15 | 11 | 9 | 3 |
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