| Age (y), median (range) | 58.5 (7–83) |
| Sex |
| Female | 58 (55.8) |
| Male | 46 (44.2) |
| Motor score (MRC scale) |
| Preoperative, mean (range) | 96.4 (55–100) |
| Postoperative, mean (range) | 94.6 (50–100) |
| Diagnosis |
| Vascular disease |
| Unruptured aneurysm | 41 (39.4) |
| Ruptured aneurysm and SAH | 8 (7.7) |
| Carotid stenosis | 8 (7.7) |
| Cavernous malformation | 2 (1.9) |
| Arteriovenous malformation | 2 (1.9) |
| Moyamoya disease | 2 (1.9) |
| Tumor |
| Metastatic brain tumor | 3 (2.9) |
| Meningioma | 16 (15.4) |
| Glioblastoma | 11 (10.6) |
| Astrocytoma | 3 (2.9) |
| Craniopharyngioma | 3 (2.9) |
| Others1) | 5 (4.8) |