靠近坐骨节位的阴茎螺丝是否具有更大的拉力?
Hani Chanbour1, Steven G Roth1, Jeffrey W Chen2
1Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville , Tennessee , USA.
Operative neurosurgery (Hagerstown, Md.)
|April 23, 2024
概括
这项研究没有发现S2 alar-iliac (S2AI) 螺丝固定强度在距离坐骨髓位附近或远处时有显著差异. 虽然靠近口的螺丝显示出更高拉力趋势,但结果在统计学上并不显著.
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
- 手术解剖学的手术解剖学
背景情况:
- 相对于坐骨架,S2 alar-iliac (S2AI) 螺丝的最佳位置还没有很好地定义.
- 了解螺丝定位对于脊柱融合程序至关重要.
研究的目的:
- 为了比较S2AI螺丝的生物力学拉出强度,将其放置在距离坐骨的5毫米以内,而距离坐骨的距离大于5毫米.
- 为了评估固定强度和稳定性,相对于坐骨节缺口的近距离.
主要方法:
- 使用双边S2AI螺丝插入的12具尸体进行的一项生物力学研究.
- 螺丝被二分为≤5毫米 (右) 或>5毫米 (左) 离坐骨,通过光镜确认.
- 使用负载电池测量拉出强度,刚度,屈服力和工作到故障,并通过曼-惠特尼测试进行分析.
主要成果:
- 螺丝拉伸强度在靠近和远离坐骨的螺丝之间没有统计学上显著的差异 (861.8 ± 340.7 N与778.7 ± 350.8 N,P=.859).
- 对于靠近口的螺丝,观察到更高的刚度和屈服力趋势,但这些也不具有统计学意义.
- 工作到故障对于离口更远的螺丝更高,尽管这种差异并不显著.
结论:
- 将S2AI螺丝放在距离坐骨切口≤5毫米的地方,与远处的螺丝相比,在统计学上没有产生更强的固定.
- 在这个尸体模型中,S2AI螺丝与坐骨的距离并没有显著影响生物力学固定强度.
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