Posterior lumbar interbody fusion versus transforaminal lumbar interbody fusion: Finite element analysis of the vibration characteristics of fused lumbar spine

2021 ◽  
Author(s):  
Wei Fan ◽  
Li-Xin Guo ◽  
Zhao Dan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lumbar Spine ◽  
Interbody Fusion ◽  
Posterior Lumbar Interbody Fusion ◽  
Transforaminal Lumbar Interbody Fusion ◽  
Vibration Characteristics ◽  
Lumbar Interbody Fusion ◽  
Element Analysis

Biomechanical Comparison of Posterior Lumbar Interbody Fusion and Transforaminal Lumbar Interbody Fusion by Finite Element Analysis

2012 ◽  
Vol 72 (1) ◽  
pp. ons21-ons26 ◽  
Author(s):  
Hao Xu ◽  
Hao Tang ◽  
Xuemei Guan ◽  
Fugui Jiang ◽  
Neng Xu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Range Of Motion ◽  
Pedicle Screw ◽  
Interbody Fusion ◽  
Posterior Lumbar Interbody Fusion ◽  
Transforaminal Lumbar Interbody Fusion ◽  
Lumbar Interbody Fusion ◽  
Element Analysis ◽  
Flexion Extension

Abstract Background: The transforaminal lumbar interbody fusion (TLIF) procedure may reduce many of the risks and limitations associated with posterior lumbar interbody fusion (PLIF). However, little is known about the biomechanical difference between PLIF and TLIF. Objective: To determine the biomechanical difference between PLIF and TLIF by finite-element analysis. Methods: Three validated finite-element models of L3-5 lumbar segment were created (intact model, PLIF model, and TLIF model). To analyze the biomechanics of these models, flexion, extension, rotation, and lateral bending moments of 7.5 N-m with a compressive preload of 400 N were imposed on the superior surfaces of the L3 vertebral body. Results: The range of motion at the L4-5 level of the PLIF and TLIF models decreased for all loading cases, compared with the intact model. Differences in the range of motion between PLIF and TLIF were not significant at less than 1 degree for all loading cases. The stress of the cage was found to be high in the PLIF model at the cageendplate interface under all loading conditions. The stress exerted on the pedicle screw was greater in TLIF than PLIF. Particularly in flexion loading, the stress experienced by the pedicle screw in the TLIF model was 70.7% greater than that in the PLIF model. Conclusion: The TLIF procedure increases the approximate biomechanical stability and reduces stress at the cage-endplate interface, except for a slight increase in screw stress. Clinically, the TLIF procedure may reduce many of the risks and limitations associated with PLIF and offer a useful alternative to the PLIF procedure.

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