Comparison of enlargement of the spinal canal after cervical laminoplasty: open-door type and double-door type

Autor: Takao Motosuneya, Hiroya Sakai, Makoto Miura, Takashi Matsushita, Yoshinobu Watanabe, Hironobu Yamada, Shigeru Hirabayashi
Rok vydání: 2010
Předmět:
Zdroj: European Spine Journal. 19:1690-1694
ISSN: 1432-0932
0940-6719
DOI: 10.1007/s00586-010-1369-y
Popis: The purpose of this study was to compare the degree of enlargement of the spinal canal between two methods of cervical laminoplasty (open-door laminoplasty and double-door laminoplasty) and to determine their appropriate surgical indications based on the results. Tension-band laminoplasty (TBL, one method of open-door type) was performed in 33 patients and double-door laminoplasty (DDL) in 20 patients. The operation level ranged from C2 to C7 in all patients. The width of the spinal canal and the inclination angle of the lamina at the C5 and C6 levels were measured using a computer software program (Image J) and pre- and postoperative CT films. Concerning the degree of enlargement of the spinal canal, the mean expansion ratio at the C5 level was 148.9% in TBL and 148.2% in DDL, and there was no significant difference between them. However, at the C6 level, it was 159.0% in TBL and 140.3% in DDL, which was significantly larger in TBL than DDL (p
Databáze: OpenAIRE