优化了对靠近的股骨进行控制的回的回器几何形状
Markus Heinecke1, Frank Layher2, Georg Matziolis2
1German Center for Orthopedics, Campus Eisenberg, Chair of Orthopedics of Jena University Hospital, Klosterlausnitzer Street 81, 07607, Eisenberg, Germany. markus_heinecke@web.de.
Scientific reports
|February 24, 2024
概括
这项研究发现,以与切削边缘相反的方向旋转杆可以显著改善腿部手术期间骨准备的控制. 使用以时针方向旋转的左切式杆,为减少并发症提供了更安全的替代方案.
科学领域:
- 整形外科手术 整形外科手术
- 生物机械工程 生物机械工程
- 手术器械的设计方法
背景情况:
- 股骨腔的准备对于内指甲骨质合成和部修复至关重要.
- 在回转过程中,高扭力会对骨完整性构成风险.
- 复合器的设计和旋转方向是影响外科手术结果的关键因素.
研究的目的:
- 通过生物机械评估刀切割方向 (右/左) 和旋转 (顺时针/反时针) 的最佳组合.
- 为了确定最安全和最有效的靠近大腿骨髓腔的回技术.
- 为了最大限度地减少扭力,并改善骨准备的控制.
主要方法:
- 使用了五个合成大腿骨和一个定制的测试系统进行生物机械分析.
- 经过测试的右和左切割的形设计的杆,在时钟针方向和反时钟针方向的旋转.
- 测量扭矩和料速率在逐步的内管回过程中.
主要成果:
- 与切割方向相反的回转器旋转显著增加了料率 (p < 0.01).
- 在所有测试的回转配置中,平均扭矩一致.
- 与相同方向旋转相比,相反的旋转促进了更容易控制的回转器料.
结论:
- 对于受控的股骨腔准备,特别是在脆弱的骨头中,轮旋转应反对切割方向.
- 采用标准时针旋转的左切式回转器提供了一个可行的选择,以减轻与回转相关的并发症.
更多相关视频
相关概念视频
Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Deformation in a Circular Shaft
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
Design of Transmission Shafts
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...
Plastic Deformation in Circular Shafts
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...


