评估内部固定构造的稳定性在一个低远距离的小腿外关节体骨折模型:一个比较的生物力学研究
Tarkik Thami1, Siddhartha Sharma1, Amit Kumar2
1Orthopaedics, Postgraduate Institute of Medical Education and Research, Chandigarh, Chandigarh, IND.
Cureus
|March 14, 2024
概括
与版选项相比,锁定的内指甲为AO类型43A3远距离骨骨折提供了更好的稳定性. 前侧板表现出最不稳定性,使它们成为这些复杂骨折的不太有利选择.
科学领域:
- 整形外科手术 整形外科手术
- 生物力学 生物力学
- 创伤外科 手术 创伤外科
背景情况:
- 对除关节外的远距离骨骨折 (AO型43A3) 的最佳内部固定进行了辩论.
- 有限的生物力学数据存在,比较这些骨折的骨髓内指甲和锁板.
研究的目的:
- 为了生物机械地比较内指甲的稳定性与AO型43A3远骨折的不同锁定板配置.
主要方法:
- 一项生物机械研究使用32个模拟的AO型43A3骨折的人类尸体骨.
- 四个固定组:内 (IM) 钉,前中板,前侧板和后板.
- 在AP和ML平面上进行三点曲试验,评估曲刚度,峰值断裂间隙角度和中立区域.
主要成果:
- 锁定的IM钉子表现出最高的生物力学稳定性 (更高的刚性,更小的间隙角,更小的中立区域).
- 前侧板在AP平面 (p=0.032) 中表现出最低的曲刚度,在ML平面 (p=0.019) 中表现出最大的中性区域.
- 发现前中后锁板是生物力学上健全的涂料选项.
结论:
- 由于其卓越的稳定性,建议在AO类型43A3远距离骨骨折时使用锁定式内髓指甲.
- 前侧锁板结构是最不稳定的,应该避免使用.
- 如果需要涂抹,中间和后部锁定板是可行的替代方案.
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