中国组织工程研究与临床康复2011，Vol.15Issue(17)：3089-3092,4.DOI:10.3969/j.issn.1673-8225.2011.17.013
椎弓根钉棒系统治疗不稳定性Jefferson骨折的生物力学分析
Instable Jefferson fracture fixed with the single or double side atlantoaxial pedicle screw-rod system: A biomechanical study
蒋小红 1肖增明 1温洁明 2唐林 3蒋雄健1
作者信息
- 1. 广西医科大学第一附属医院脊柱骨病外科,广西壮族自治区南宁市,530021
- 2. 广西大学机械工程学院,广西壮族自治区南宁市,530004
- 3. 广西壮族自治区人民医院骨外科,广西壮族自治区南宁市,530000
- 折叠
摘要
Abstract
BACKGROUND: At present, posterior atlanto-axial pedicle screws have a trend to replace Magerl technology, and become the new standard operation for vertebral instability.OBJECTIVE: To evaluate the mechanical stability of the single or double side atlantoaxial pedicle screw-rod system for treatment of instable Jefferson fracture, in order to provide the basis for clinical application.METHODS: After gross observation and X-radiography confirmation of the specimen's integrity and no osseous abnormality, six adult wet-cadvaveric spinal (C0-4) specimens were used to test the biomechanical stability. The specimens were intact, after instable Jefferson fracture and transverse ligament section, and after stabilization fellow the two techniques: the single or double side atlantoaxial pedicle screw-rod system. The three dimensional movements of C1-2 were recorded though photogrametry with a pure moment of 1.53 N . m. The range of motion (ROM) of each specimen in two fixations was calculated. Statistical analysis was performed with one-way analysis of variance, Fish's least significant difference test to evaluate the immediate stability of the fixation with the two methods.RESULTS AND CONCLUSION: In flexion, lateral flexion and axial rotation of sports, the ROM in the single side atlantoaxial pedicle screw-rod system group was significantly more than that in the double side atlantoaxial pedicle screw-rod system group (P ＜ 0.05). In the treatment of instable Jefferson fracture, the double side atlantoaxial pedicle screw-rod system can provide excellent stability; Fixed effect of the single side atlantoaxial pedicle screw-rod system is not good, and its anti-rotation ability is poor and cannot satisfy the demands of the strengthen stability, graft fusion, which should avoid to be used alone.关键词
椎弓根螺钉/生物力学/Jefferson骨折/硬组织植入物/植骨融合分类
基础医学引用本文复制引用
蒋小红,肖增明,温洁明,唐林,蒋雄健..椎弓根钉棒系统治疗不稳定性Jefferson骨折的生物力学分析[J].中国组织工程研究与临床康复,2011,15(17):3089-3092,4.
