Experimental Study of Hemilaminectomy, Total Laminectomy and Recapping laminoplasty of Cervical Spine in Sheep
10.16156/j.1004-7220.2021.06.15
- VernacularTitle:羊颈椎半椎板切除、全椎板切除及椎板回植成形的实验研究
- Author:
Juying HUANG
1
;
Yong HUANG
2
;
Can ZHANG
3
;
Fengzeng JIAN
3
Author Information
1. School of Biomedical Engineering, Capital Medical University；Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University
2. Department of Neurosurgery, Civil Aviation General Hospital
3. Department of Neurosurgery, Xuanwu Hospital
- Publication Type:Journal Article
- Keywords:
hemilaminectomy;
laminectomy;
recapping laminoplasty;
cervical stability
- From:
Journal of Medical Biomechanics
2021;36(6):E929-E934
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of hemilaminectomy, total laminectomyand recapping laminoplasty on stability of the cervical spine. Methods Fourteen fresh adult sheep cervical spine specimens were divided into two groups, with 7 cases in each group. Each specimen was applied with a pure moment load of 3.0 N·m under flexion/extension, left/right lateral bending, and left/right axial rotation. The range of motion (ROM) and neutral zone (NZ) of specimens were measured. In the first group, the ROMs and NZs of the specimens were measured and compared under the intact state, C5 hemilaminectomy state and C4-6 hemilaminectomy state respectively. In the second group, the ROMs and NZs of specimens under the intact state, C4-6 total laminectomy state and C4-6 recapping laminoplasty state were measured and compared. Results There were no significant differences in ROMs and NZs between C5 hemilaminectomy state and C4-6 hemilaminectomy state compared with the intact state (P<0.05). Compared with the intact state, ROMs of the specimens were significantly increased during flexion and extension under C4-6 laminectomy state and C4-6 recapping laminoplasty state (P<0.05). In addition, compared with the C4-6 laminectomy state, ROMs of the specimen were significantly decreased only during extension unde C4-6 recapping laminoplasty state (P<0.05), while no significant differences were found in ROMs between total laminectomy and laminoplasty under other loads. Conclusions With hemilaminectomy, ROMs and NZs of the cervical spine did not increase significantly, and stability of the cervical spine was not affected. With C4-6 total laminectomy, ROMs and NZs during flexion and extension increased significantly, and stability of the cervical spine was affected. Recapping laminoplasty did not significantly improve stability of the cervical spine with total laminectomy.
