For predicting the biomechanical effects of the fusion procedure, finite element (FE) analysis is widely used as a preclinical tool. Although several FE studies examined the efficacies of various fusion surgical techniques, comparative studies on Open and minimally invasive (MIS) transforaminal lumbar interbody fusion (TLIF) procedures incorporating a follower coordinate system have not been investigated yet. The current FE study evaluates the ranges of motion (ROM) and load distributions of Open-TLIF and MIS-TLIF implanted models, under physiological loading such as compression, flexion, extension and lateral bending. The most noteworthy finding from the investigation is that both the fusion procedures significantly reduced the ROMs of the implanted segment (L3-L4) and full model (L1-L5) by at least 89 % and 44 %, respectively, compared to the intact model. For all loading situations, over 95 % of the implanted models' cancellous bone volume was subjected to von Mises strains ranging from 0.0003 to 0.005. The maximum von Mises strain was observed to be localized on a small amount of cancellous bone volume (<5 %). The likelihood of adjacent segment degeneration is higher in the case of MIS-TLIF due to the higher stress (22–53 MPa) and strain (0.018–0.087) noticed on the upper facet of the L3 vertebra.

为了预测融合过程的生物力学效应，有限元 (FE) 分析被广泛用作临床前工具。尽管一些有限元研究检验了各种融合手术技术的功效，但尚未对结合随动坐标系的开放式和微创 (MIS) 经椎间孔腰椎椎间融合 (TLIF) 手术进行比较研究。目前的有限元研究评估了 Open-TLIF 和 MIS-TLIF 植入模型在压缩、屈曲、伸展和侧向弯曲等生理载荷下的运动范围 (ROM) 和载荷分布。调查中最值得注意的发现是，与完整模型相比，两种融合程序均将植入节段 (L3-L4) 和完整模型 (L1-L5) 的 ROM 分别显着减少了至少 89% 和 44% 。对于所有负载情况，超过 95% 的植入模型松质骨体积受到 0.0003 至 0.005 范围内的 von Mises 应变的影响。观察到最大 von Mises 应变位于少量松质骨体积 (<5%) 上。在 MIS-TLIF 情况下，由于 L3 椎骨上关节面的应力 (22–53 MPa) 和应变 (0.018–0.087) 较高，相邻节段退化的可能性较高。