Optimal configuration of a dual locking plate for femoral allograft or recycled autograft bone fixation: A finite element and biomechanical analysis
Optimal configuration of a dual locking plate for femoral allograft or recycled autograft bone fixation: A finite element and biomechanical analysis
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DOI：
10.1016/j.clinbiomech.2020.105156
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发表时间：
2020-12-01
影响因子：
1.8
通讯作者：
Kasai, Yuichi
中科院分区：
文献类型：
--
作者：
Wisanuyotin, Taweechok;Sirichativapee, Winai;Kasai, Yuichi
背景：同种异体骨和回收的自体骨通常用于生物重建。双锁定板固定方法一直主张增加同种异体移植物的稳定性和防止固定失败，但是，生物力学性能的各种配置的双锁定板还没有得到广泛的study.Methods：在有限元（FE）分析，我们开发了6种模式的不同的双锁定板配置固定的股骨中段。记录6个模型的最大应变，然后计算轴向、弯曲和扭转刚度。有限元分析结果与力学试验结果进行了验证（轴向压缩、弯曲和扭转刚度）。结果：最高轴向压缩（715.41 N/mm）和侧向弯曲（2981.24 N/mm）在模型4中发现（在内侧和外侧放置两块10孔锁定板），而模型3（在后侧和外侧放置8孔和10孔锁定钢板）的扭转刚度最高（193.59 N.mm/mm）。有限元分析和生物力学测试之间的一致性非常好（r（2）= 0.98）。解释：双锁定板配置，内侧和外侧，10孔锁定板提供了最坚固和最强的股骨固定;无论是在轴向压缩和侧向弯曲刚度。
Background: Allografts and recycled bone autograft are commonly used for biological reconstruction. The dual locking plates fixation method has been advocated for increasing allograft stability and preventing fixation failure; however, the biomechanical properties of the various configurations of dual locking plates have not been extensively studied.Methods: In a finite element (FE) analysis, we developed 6 patterns of different dual locking plate configurations for fixation of the mid shaft of the femur. The maximum strains were recorded for each of the 6 models then axial, bending and torsion stiffness were calculated. The FE analysis was validated the results with mechanical testing (axial compression, bending, and torsional stiffness) on a cadaveric femur.Findings: The highest axial compression (715.41 N/mm) and lateral bending (2981.24 N/mm) was found in Model 4 (with two 10-hole locking plates placed at the medial and lateral side), while the highest torsional stiffness (193.59 N.mm/mm) was found in Model 3 (with 8- and 10-hole locking plates placed at the posterior and lateral side). Excellent agreement was found between the finite element analysis and biomechanical testing (r(2) = 0.98).Interpretation: The dual locking plate configuration with medial and lateral, 10-hole locking plates provided the most rigid and strongest fixation of the femur; both in terms of axial compression and lateral bending stiffness.