Comparison of the Biomechanical Changes After Percutaneous Full-Endoscopic Anterior Cervical Discectomy versus Posterior Cervical Foraminotomy at C5-C6: A Finite Element-Based Study

Yuchi, Chen-Xi; Sun, Guangli; Chen, Chao; Liu, Gang; Zhao, Dong; Yang, Huanjie; Xu, Bei; Deng, Shuiguang; Ma, Xinlong; Du, Chengbin; Yang, Qiang

doi:10.1016/j.wneu.2019.05.025

Cited by 24 publications

(24 citation statements)

References 30 publications

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“…PECD is better method for the treatment of cervical diseases when compared with PEACD. 21 The main disadvantages of this procedure are steep learning curve and high risk of spinal cord injury. Firstly, most spine surgeons are not familiar with endoscopic system.…”

Section: Discussionmentioning

confidence: 99%

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Posterior Endoscopic Cervical Decompression: Review and Technical Note

Chao

Wu²,

Zheng³

et al. 2020

Neurospine

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Endoscopic spine surgery for the treatment of degenerative spinal diseases from lumbar to cervical spine has accelerated over the past 2 decades. Posterior endoscopic cervical discectomy (PECD) has been described as a safe, effective, and minimally invasive procedure for cervical radiculopathy or even part of the myelopathy. This procedure also has been validated with comparable outcomes to open and microscopic surgery. Radiculopathy due to foraminal disc herniation or foraminal stenosis should be the optimum indications of this procedure. Intraoperative 3-dimensional navigation can help surgeons to get quick and great quality guidance for endoscopic surgeons. In this review, we will focus on the technical details and evidence-based results of PECD which is a promising procedure for cervical radiculopathy with the advantages of a minimally invasive method.

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Section: Discussionmentioning

confidence: 99%

“…However, study comparing PEACD with PECD showed that PEACD could make significant hypermobility and intradiscal pressure when compare to PECD. PECD is better method for the treatment of cervical diseases when compared with PEACD [ 21 ].…”

Section: Discussionmentioning

confidence: 99%

Posterior Endoscopic Cervical Decompression: Review and Technical Note

Chao

Wu²,

Zheng³

et al. 2020

Neurospine

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“…A finite element model of the cervical spine (C5-C6) was previously developed by our research team [28]. The detailed steps for building a FE model were obtained from previous researches [22,28].…”

Section: Development Of Modelmentioning

confidence: 99%

“…Briefly, based on the above FE model of the cervical spine [28], a three dimensional FE model of the cervical spine (C3-C7) was developed using a series of computed tomography (CT) scans in 0.625 mm slices from a young male subject (Fig. 7).…”

Section: Development Of Modelmentioning

confidence: 99%

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Finite element study on effect of follower load on intersegmental rotation, facet joint force and nucleus pressure of the cervical spine

Cai¹,

Yuchi²,

Du³

et al. 2019

Preprint

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Background: The follower load is used to simulate the physiological compressive load of human spine. These compressive loads can maintain cervical spine’s mechanics stability and play a significant role in improving load-carrying capacity of the cervical spine. However, under different follower loads the biomechanical response of the cervical spine is unknown. So the aim of this study is to investigate the effect of follower load on biomechanics of the cervical spine. Results: In this study, a three-dimensional nonlinear finite element (FE) model of the cervical spine (C3-C7) was built and validated. Using this FE model of the cervical spine, we evaluated the effect of different follower loads on intersegmental rotation, facet joint force, and nucleus pressure in the cervical spine. The results indicated that with the follower load increased, the intersegmental rotation of the cervical spine in extension decreased, but the intersegmental rotation in other postures increased. The follower load increased the facet joint forces in all postures. In lateral bending (LB), the facet joint forces were only generated in the ipsilateral facet joints. In axial rotation (AR), there was a large asymmetry in the facet joint forces, and this asymmetry worsened with the follower load increased. The nucleus pressure of each segment nonlinearly increased with the follower load increased in all postures. Conclusion: An comprehensive analysis in intersegmental rotation, facet joint force and nucleus pressure under different follower loads can provide us a deeper understanding of the follower load in the human spine.

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Biomechanical modelling of the facet joints: a review of methods and validation processes in finite element analysis

Mengoni

2020

Biomech Model Mechanobiol

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There is an increased interest in studying the biomechanics of the facet joints. For in silico studies, it is therefore important to understand the level of reliability of models for outputs of interest related to the facet joints. In this work, a systematic review of finite element models of multi-level spinal section with facet joints output of interest was performed. The review focused on the methodology used to model the facet joints and its associated validation. From the 110 papers analysed, 18 presented some validation of the facet joints outputs. Validation was done by comparing outputs to literature data, either computational or experimental values; with the major drawback that, when comparing to computational values, the baseline data was rarely validated. Analysis of the modelling methodology showed that there seems to be a compromise made between accuracy of the geometry and nonlinearity of the cartilage behaviour in compression. Most models either used a soft contact representation of the cartilage layer at the joint or included a cartilage layer which was linear elastic. Most concerning, soft contact models usually did not contain much information on the pressure-overclosure law. This review shows that to increase the reliability of in silico model of the spine for facet joints outputs, more needs to be done regarding the description of the methods used to model the facet joints, and the validation for specific outputs of interest needs to be more thorough, with recommendation to systematically share input and output data of validation studies.

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Comparison of the Biomechanical Changes After Percutaneous Full-Endoscopic Anterior Cervical Discectomy versus Posterior Cervical Foraminotomy at C5-C6: A Finite Element-Based Study

Cited by 24 publications

References 30 publications

Posterior Endoscopic Cervical Decompression: Review and Technical Note

Posterior Endoscopic Cervical Decompression: Review and Technical Note

Finite element study on effect of follower load on intersegmental rotation, facet joint force and nucleus pressure of the cervical spine

Biomechanical modelling of the facet joints: a review of methods and validation processes in finite element analysis

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