Sakaura et al. 2003 | ACDF, laminoplasty | 7284 | 4.6% (335) | 0.37% (27) | 8.1% (27/335) |
Hasegawa et al. 2007 | ACDF, laminoplasty, laminectomy | 857 | 5.7% (49) | 0.58% (5) | 10.2% (5/49) |
Hashimoto et al. 2010 | ACDF | 199 | 8.5% (17) | 1.0% (2) | 11.8% (2/17) |
Imagama et al. 2010 | laminoplasty | 1858 | 2.3% (43) | 0.12% (2) | 4.7% (2/43) |
Kaneyama et al. 2010 | laminoplasty | 146 | 5.5% (8) | 1.4% (2) | 25.0% (2/8) |
Nassr et al. 2012 | Multilevel corpectomy, corpectomy with posterior fusion, posterior laminectomy and fusion, and laminoplasy | 630 | 6.7% (42) | 0.48% (2) | 7.1% (3/42) |
Summation (excluding Sakura et al.) | | 3690 | 4.3% (159) | 0.38% (14) | 8.8% (14/159) |