Abstract The study utilized finite element method to determine displacements and stresses in a set of Pauwels Type III femoral neck fractures repaired using 3 techniques (cannulated screws (Triad), sliding hip screw (SHS), and a Hybrid (SHS + cannulated screws). The research found that shear displacement doubled between the 65° and 75° fracture angles regardless of fixation construct. The SHS alone was the least stable construct, with highest construct stresses and shear displacement along the fracture plane. The stability of the Hybrid and Triad constructs were similar, but stress in the Hybrid was lower suggesting it would provide a higher load to failure than the Triad.

中文翻译：

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混合三元组在 Pauwels III 型髋部骨折的计算模型中提供骨折平面稳定性

摘要 本研究利用有限元方法确定使用 3 种技术（空心螺钉（Triad）、滑动髋螺钉（SHS）和混合（SHS + 空心螺钉）修复的一组 Pauwels III 型股骨颈骨折的位移和应力）。研究发现，无论固定结构如何，在 65° 和 75° 骨折角之间剪切位移都翻了一番。单独的 SHS 是最不稳定的结构，具有最高的结构应力和沿骨折平面的剪切位移。Hybrid 和 Triad 结构的稳定性相似，但 Hybrid 中的压力较低，这表明它比 Triad 提供更高的故障负载。