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首页> 外文期刊>Injury >Performance of modified anatomic plates is comparable to proximal femoral nail, dynamic hip screw and anatomic plates: finite element and biomechanical testing.
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Performance of modified anatomic plates is comparable to proximal femoral nail, dynamic hip screw and anatomic plates: finite element and biomechanical testing.

机译：改良的解剖板的性能可与股骨近端钉，动力髋螺钉和解剖板媲美：有限元和生物力学测试。

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AIM: To establish whether the modified anatomic plate (MAP) performs as well as the anatomic plate (AP), dynamic hip screw (DHS) and proximal femoral nail (PFN) from a biomechanical perspective. MATERIALS AND METHODS: The, AP, MAP, DHS and PFN were assessed using finite element (FE) methods and biomechanical tests. A solid model was created based on the fracture lines and results were assessed using analyses of variance. MAIN OUTCOME MEASUREMENTS: Independent variables were the implants (n=4) and axial loads: 0-1000 Newton (N) in 100 N increments. Dependent variables were loads at the intertrochanteric fracture line as measured by load cells. RESULTS: Axial loads /=400 N, the AP and DHS generated nonsignificant (p>0.5) lower forces (almost 50% less) compared with the MAP and PFN. At 1000 N, the DHS generated the highest (p<0.05) load at the fracture line. CONCLUSION: The biomechanical features of the MAP were similar to those of the PFN. The MAP generated optimal loads at both the fracture site and the proximal femur. FE methods and biomechanical tests revealed that the MAP is associated with both intra- and extra-medullary fixation features, even though the load was applied as an extramedullary stimulus.
机译：目的：从生物力学的角度确定改良的解剖板（MAP）是否与解剖板（AP），动力髋螺钉（DHS）和股骨近端钉（PFN）一样好。材料与方法：使用有限元（FE）方法和生物力学测试对AP，MAP，DHS和PFN进行评估。基于裂缝线创建实体模型，并使用方差分析评估结果。主要观察指标：独立变量是植入物（n = 4）和轴向载荷：0-1000牛顿（N），增量为100N。因变量是转子间骨折线的负荷，由负荷传感器测量。结果：在FE模型和生物力学设置中，轴向载荷 / = 400 N，与MAP和PFN相比，AP和DHS产生的力较小（p> 0.5）低（几乎减少了50％）。在1000 N下，DHS在断裂线上产生了最高的载荷（p <0.05）。结论：MAP的生物力学特征与PFN相似。 MAP在骨折部位和股骨近端均产生最佳载荷。有限元方法和生物力学测试表明，即使载荷被用作髓外刺激，MAP也与髓内和髓外固定功能相关。

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