Biomechanical Comparison of a Novel Facet Joint Fusion Fixation Device With Conventional Pedicle Screw Fixation Device: A Finite Element Analysis

• DOI: 10.1111/os.70003
• Publication Date: 2025-02-28T20:59:14Z
• Authors: Feilong Sun; Haiyang Qiu; Yufei Ji; Longchao Wang; Wei Lei; Yang Zhang
• Keywords: Biomechanics; Facet (psychology)

ABSTRACT Purpose The biomechanics of a novel facet joint fusion device is unknown. objective this study to analyze and compare the biomechanical properties integrated with oblique lateral interbody (OLIF) those conventional pedicle screw fixation device, employing finite element analysis. Methods A comprehensive three‐dimensional model L3‐S1 lumbar spine was developed validated. Based on model, three surgical groups were created: OLIF combined bilateral (BFJFF + OLIF), unilateral (UPSF (BPSF focusing L4‐L5 level. torque 7.5 Nm applied simulate vertebral activities under six conditions: flexion, extension, bending (left right), axial rotation right). maximum displacement at segment then calculated. stress values recorded cage L3‐L4 L5‐S1 segments. Results When compared other two models, BFJFF exhibited smallest value across all working conditions. also demonstrated lowest as well left right conditions when models. However, extension condition cage, BPSF showed value. At adjacent segments, registered during flexion L3‐L4, conditions, UPSF Under segment, both UPSF+OLIF models values. Concurrently, presented rotation. In condition, Conclusions This demonstrates that OLIF, achieves 360° by fusing joints, thereby enhancing spinal stability post‐fusion. segments diminished. findings suggest may serve internal method. It provide new option for treatment patients low back pain in future.