与脚螺丝相比,螺丝锁板可以提高固定强度:生物机械分析
Dimitriy G Kondrashov1,2,3, Amit S Piple4, Victor Ungurean4
1St. Mary's Spine Center, 1 Shrader St., Suite 600, San Francisco, CA, 94117, USA. sfspine@gmail.com.
Spine deformity
|June 17, 2023
概括
与传统的脚螺丝相比,一种新型的螺旋锁板提供了优越的拉力和耐疲劳性,为后腰部仪器提供了可行的替代方案.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 骨科生物力学 骨科生物力学
- 植入物设计 植入物设计
背景情况:
- 脚螺丝松动是后脊柱固定的一个常见并发症,特别是在骨质疏松患者中.
- 固定角度锁定板在创伤手术中改善了骨质疏松性骨折的固定.
- 这项研究将创伤和脊柱外科手术的原则整合到新型仪器设备中.
研究的目的:
- 为了评估与传统的脚螺杆结构相比,新型的螺旋板锁定板的生物力学性能.
- 为了评估螺旋板系统的固定强度,运动范围和耐疲劳性.
主要方法:
- 一个脊柱状锁定板的设计是基于人类胸脊椎脊椎形态学.
- 尸体的腰椎脊柱经过了用spinolaminar板与脚螺丝进行构造测试.
- 机械测试包括运动范围和循环疲劳测试的纯矩测试,然后进行拉出强度评估.
主要成果:
- 斯皮诺拉米纳板表现出明显优异的拉出强度 (1065 N 与 714 N 相比,p=0.028).
- 这两种系统在曲/延伸和轴旋转方面都显示了相当的运动减速范围.
- 在循环疲劳测试中,Spinolaminar构件在循环疲劳测试中没有出现故障,与一个脚螺丝构件不同.
结论:
- 脊柱膜锁定板可提供足够的疲劳后固定,可与关键脊柱运动中的脚螺丝相提并论.
- 在循环疲劳和拉出强度方面,螺旋板的性能优于脚螺丝.
- 这种新的板块设计为成年人后腰部仪器提供了一个有前途的替代方案.
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