背景:这项研究使用有限元分析研究了用于治疗胫骨平台后外侧骨折的新型钢板的生物力学特性。
方法:研究组如下:PM组,新型胫骨平台后内侧骨折钢板模型;PL组,新型钢板合并胫骨平台后外侧骨折模型;PC组,胫骨平台后骨折新型钢板模型。我们使用了两种加载模式:在整个高原上均匀加载,在后高原上装载。记录并分析了新钢板和螺钉上的断裂位移和应力分布等数据。
结果:当整个高原加载时,PM组的骨折位移,PL,PC分别为0.273、0.114和0.265mm,分别。PM组中的板上的最大应力,PL,PC为118.131MPa,44.191MPa,和115.433MPa。PM组中螺钉的最大应力,PL,和PC分别为166.731、80.330和164.439MPa,分别。当胫骨后平台加载时,PM组的骨折位移,PL,PC分别为0.410、0.213和0.390mm,分别。PM组中的板上的最大应力,PL,PC为194.012MPa,72.806MPa,185.535MPa。PM组中螺钉的最大应力,PL,和PC分别为278.265、114.839和266.396MPa,分别。
结论:这项研究的结果表明,钛板在所有组中都具有良好的固定效果;因此,使用新型钢板治疗胫骨平台后外侧骨折似乎是安全有效的。
BACKGROUND: This study investigated the biomechanical properties of a new plate used for the treatment of posterolateral tibial plateau fractures using finite element analysis.
METHODS: The study groups were as follows: group PM, model of the new plate with posteromedial tibial plateau fracture; group PL, model of the new plate with posterolateral tibial plateau fracture; and group PC, model of the new plate with posterior tibial plateau fracture. We used two loading modes: uniform loading on the entire plateau, and loading on the posterior plateau. Data such as the displacement of the fracture and distribution of stress on the new plate and screws were recorded and analyzed.
RESULTS: When the whole plateau was loaded, the displacement of fractures in groups PM, PL, and PC were 0.273, 0.114, and 0.265 mm, respectively. The maximum stresses on the plates in groups PM, PL, and PC were 118.131 MPa, 44.191 MPa, and 115.433 MPa. The maximum stresses on the screws in Groups PM, PL, and PC were 166.731, 80.330, and 164.439 MPa, respectively. When the posterior tibial plateau was loaded, the displacement of the fractures in groups PM, PL, and PC was 0.410, 0.213, and 0.390 mm, respectively. The maximum stresses on the plates in groups PM, PL, and PC were 194.012 MPa, 72.806 MPa, and 185.535 MPa. The maximum stresses on the screws in Groups PM, PL, and PC were 278.265, 114.839, and 266.396 MPa, respectively.
CONCLUSIONS: The results of this study revealed that titanium plates have good fixation effects in all groups; therefore, the use of the new plate for posterolateral tibial plateau fractures appears to be safe and valid.