The Biomechanical Study of Extraforaminal Lumbar Interbody Fusion: A Three-Dimensional Finite-Element Analysis

Yang, Mingjie; Sun, Guixin; Guo, Shuxiang; Zhang, Cheng; Yan, Meijun; Han, Yingchao; Xia, Dongdong; Zhang, Jingjie; Li, Xinhua; Xiang, Yang; Pan, Jie; Li, Lijun; Tan, Jun

doi:10.1155/2017/9365068

Cited by 3 publications

(3 citation statements)

References 28 publications

(20 reference statements)

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“…Belytschko et al 15 first applied FE analysis to the study of spine biomechanics in 1973. Subsequently, many scholars verified the reliability of the stress and strain results of FE analysis through relevant experiments and obtained relatively positive results [16][17][18][19][20] . In this study, a FE model of the whole lumbar spine was established in the intact group using the CT data of a healthy adult and validated using published experimental data.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

Liu

Niu

et al. 2021

Sci Rep

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The aim of the study was to evaluate the biomechanical properties of a novel nonfused artificial vertebral body in treating lumbar diseases and to compare with those of the fusion artificial vertebral body. An intact finite element model of the L1–L5 lumbar spine was constructed and validated. Then, the finite element models of the fusion group and nonfusion group were constructed by replacing the L3 vertebral body and adjacent intervertebral discs with prostheses. For all finite element models, an axial preload of 500 N and another 10 N m imposed on the superior surface of L1. The range of motion and stress peaks in the adjacent discs, endplates, and facet joints were compared among the three groups. The ranges of motion of the L1–2 and L4–5 discs in flexion, extension, left lateral bending, right lateral bending, left rotation and right rotation were greater in the fusion group than those in the intact group and nonfusion group. The fusion group induced the greatest stress peaks in the adjacent discs and adjacent facet joints compared to the intact group and nonfusion group. The nonfused artificial vertebral body could better retain mobility of the surgical site after implantation (3.6°–8.7°), avoid increased mobility and stress of the adjacent discs and facet joints.

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Section: Discussionmentioning

confidence: 99%

Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

Liu

Niu

et al. 2021

Sci Rep

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“…Additionally, Retaining the mechanical support including the posterior ligament complex and the middle column can improve the immediate stability and signi cantly reduce the in uence for adjacent segments. Therefore, the unilateral xation of ELIF can achieve satis ed e cacy in lumbar degenerative diseases including LDH revision surgery , and ELIF obtains signi cantly higher stability than TLIF in unilateral xation [21] . The well initial stability was not only an important factor for interbody fusion, but also a guarantee that the patient's symptoms can be continuously improved in one year VAS 2.6±0.8, ODI 14.6±4.9 .…”

Section: Discussionmentioning

confidence: 99%

Clinical Study of Unilateral Extraforaminal Lumbar Interbody Fusion (ELIF) Revision For Lumbar Disc Herniation After Primary Discectomy

Tang²,

Chen³

et al. 2021

Preprint

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Background: Lumbar disc herniation (LDH) is a common spinal disorder. The discectomy with non-fusion operation is widely used. When the revision is needed, the options for revision way is still controversial. This study aims to introduce unilateral extraforaminal lumbar interbody fusion (ELIF) revision surgery, and to investigate the clinical efficacy and complication of Unilateral Extraforaminal Lumbar Interbody Fusion (ELIF) in revising primary discectomy for lumbar disc herniation. Methods:16 patients with incomplete removal and recurrence herniation of lumbar disc after minimally invasive treatment without fixation were treated by ELIF with unilateral pedicle screw(UPS) from April 2016 to October 2020. All those patietns including 11 male and 5 female aged 29-65 years were analyzed retrospectively. The clinical effects were evaluated by operation time, intraoperative blood loss, postoperative blood volume of drainage and complications. The Visual Analogue Scale(VAS), Oswestry Disability Index (ODI) were documented before, after surgery and at last follow--up. Results: The operation time was 95.73±10.5 min, the bleeding volume was 201.5±27.6 ml. Postoperative blood volume of drainage was 50.7±6.3 ml. 2 patients suffered dura tear. All patients were followed up for 12-26 months with 15.7 on average. VAS and ODI scores significantly improved at the preoperative, postoperative and the 12th month’s follow up (P < 0.05). Conclusion: The application of ELIF with unilateral fixation is a satisfied way to revise primary discectomy for lumbar disc herniation. However, the dura tear induced by scar tissue adhesion needs to be noticed.

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“…The procedure is not new, instead it is common enough as testified by the presence on the market of commercial codes, such as Simpleware Scan IP [90], [91], or…”

Section: Implant Simulation With Cg Femmentioning

confidence: 99%

Direct creation of patient-specific Finite Element models from medical images and preoperative prosthetic implant simulation using h-adaptive Cartesian grids.

Giovannelli¹

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In silico medicine is believed to be one of the most disruptive changes in the near future. A great effort has been carried out during the last decade to develop predicting computational models to increase the diagnostic capabilities of medical doctors and the effectiveness of therapies. One of the key points of this revolution, will be personalisation, which means in most of the cases creating patient specific computational models, also called digital twins. This practice is currently widespread in research and there are quite a few software products in the market to obtain models from images. Nevertheless, in order to be usable in the clinical practice, these methods have to drastically reduce the time and human intervention required for the creation of the numerical models. First of all, I would like to thank my supervisors Prof. Juan José Ródenas and Dr. Manuel Tur for their exceptional support, trust and comprehension during these years. They actually offered me more dedication and guidance than I would have ever expected to receive. My special thanks go to Prof. Stéphane Bordas and Dr. Pierre Kerfriden for letting me be part of the Advanced Materials and Computational Mechanics research group and to the wonderful people I had the pleasure to meet during my stay at Cardiff University. I am also extremely grateful to Prof. Waldir Roque and Prof. Jessica Zhang for their hospitality and the insightful time dedicated. I would also like to extend my gratitude to all the members of the Departamento de Ingeniería Mechánica y Materiales at the Universitat Politècnica de València who never hesitated to offer me their experience, knowledge and help. In particular I would like to thank Prof.

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The Biomechanical Study of Extraforaminal Lumbar Interbody Fusion: A Three-Dimensional Finite-Element Analysis

Cited by 3 publications

References 28 publications

Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

Clinical Study of Unilateral Extraforaminal Lumbar Interbody Fusion (ELIF) Revision For Lumbar Disc Herniation After Primary Discectomy

Direct creation of patient-specific Finite Element models from medical images and preoperative prosthetic implant simulation using h-adaptive Cartesian grids.

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