Soft Tissue Injury in Cervical Spine Is a Risk Factor for Intersegmental Instability: A Finite Element Analysis

Nishida, Norihiro; Tripathi, Sudharshan; Mumtaz, Muzammil; Kelkar, Amey; Kumaran, Yogesh; Sakai, Takashi; Goel, Vijay K.

doi:10.1016/j.wneu.2022.04.112

Cited by 15 publications

(13 citation statements)

References 30 publications

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“…Additionally, the material properties of intervertebral discs in the FE models may influence the biomechanical results. Nishida et al (2022), Nikkhoo et al (2019), Gandhi et al (2019), andChen et al (2022) developed an intervertebral disc model with hyperelastic material properties. Also, a lumbar disc geometry and the properties of disc annulus fibrosis described using a microstructure-based chemo-viscoelastic model have been constructed in some studies (Kandil et al, 2019;Khalaf and Nikkhoo, 2021).…”

Section: Risks Of Degeneration At Adjacent Segmentsmentioning

confidence: 99%

Biomechanical performance of the novel assembled uncovertebral joint fusion cage in single-level anterior cervical discectomy and fusion: A finite element analysis

Zhang

Yang²,

Shen³

et al. 2023

Front. Bioeng. Biotechnol.

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Introduction: Anterior cervical discectomy and fusion (ACDF) is widely accepted as the gold standard surgical procedure for treating cervical radiculopathy and myelopathy. However, there is concern about the low fusion rate in the early period after ACDF surgery using the Zero-P fusion cage. We creatively designed an assembled uncoupled joint fusion device to improve the fusion rate and solve the implantation difficulties. This study aimed to assess the biomechanical performance of the assembled uncovertebral joint fusion cage in single-level ACDF and compare it with the Zero-P device.Methods: A three-dimensional finite element (FE) of a healthy cervical spine (C2−C7) was constructed and validated. In the one-level surgery model, either an assembled uncovertebral joint fusion cage or a zero-profile device was implanted at the C5–C6 segment of the model. A pure moment of 1.0 Nm combined with a follower load of 75 N was imposed at C2 to determine flexion, extension, lateral bending, and axial rotation. The segmental range of motion (ROM), facet contact force (FCF), maximum intradiscal pressure (IDP), and screw−bone stress were determined and compared with those of the zero-profile device.Results: The results showed that the ROMs of the fused levels in both models were nearly zero, while the motions of the unfused segments were unevenly increased. The FCF at adjacent segments in the assembled uncovertebral joint fusion cage group was less than that that of the Zero-P group. The IDP at the adjacent segments and screw–bone stress were slightly higher in the assembled uncovertebral joint fusion cage group than in those of the Zero-P group. Stress on the cage was mainly concentrated on both sides of the wings, reaching 13.4–20.4 Mpa in the assembled uncovertebral joint fusion cage group.Conclusion: The assembled uncovertebral joint fusion cage provided strong immobilization, similar to the Zero-P device. When compared with the Zero-P group, the assembled uncovertebral joint fusion cage achieved similar resultant values regarding FCF, IDP, and screw–bone stress. Moreover, the assembled uncovertebral joint fusion cage effectively achieved early bone formation and fusion, probably due to proper stress distributions in the wings of both sides.

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Section: Risks Of Degeneration At Adjacent Segmentsmentioning

confidence: 99%

Biomechanical performance of the novel assembled uncovertebral joint fusion cage in single-level anterior cervical discectomy and fusion: A finite element analysis

Zhang

Yang²,

Shen³

et al. 2023

Front. Bioeng. Biotechnol.

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“…Recently, statistics from the United States [ 7 ] show that 38.2%, 32.3%, 14.3%, 7.8%, 4.1%, and 3.3% are the percentages of CS injury by car accidents, falls, violence, sports, and recreational activities, medical errors, and other factors, respectively, where severe injuries can cause fractures and/or dislocations and consequently lead to more serious consequences such as significant functional disability, or even death, which results in a large financial burden [ 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Classification of Cervical Spine Fracture and Dislocation Using Refined Pre-Trained Deep Model and Saliency Map

et al. 2023

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Cervical spine (CS) fractures or dislocations are medical emergencies that may lead to more serious consequences, such as significant functional disability, permanent paralysis, or even death. Therefore, diagnosing CS injuries should be conducted urgently without any delay. This paper proposes an accurate computer-aided-diagnosis system based on deep learning (AlexNet and GoogleNet) for classifying CS injuries as fractures or dislocations. The proposed system aims to support physicians in diagnosing CS injuries, especially in emergency services. We trained the model on a dataset containing 2009 X-ray images (530 CS dislocation, 772 CS fractures, and 707 normal images). The results show 99.56%, 99.33%, 99.67%, and 99.33% for accuracy, sensitivity, specificity, and precision, respectively. Finally, the saliency map has been used to measure the spatial support of a specific class inside an image. This work targets both research and clinical purposes. The designed software could be installed on the imaging devices where the CS images are captured. Then, the captured CS image is used as an input image where the designed code makes a clinical decision in emergencies.

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“…This is considered to be the classical method for modelling soft tissue deformation. Finite elements have been used in medical research in orthopaedics, dentistry [7][8] and some soft tissue analysis [9][10]. The principle of finite elements is to model soft tissues, give them biomechanical material properties, and measure mechanical parameters such as elastic modulus, Poisson's ratio and shear modulus to study soft tissue injury mechanisms and injury protection.…”

Section: Introductionmentioning

confidence: 99%

Simulation of a novel surgical approach to perianal abscesses using three-dimensional finite element method

Rong,

Zhaochu,

Minhui

et al. 2023

Second International Conference on Biomedical and Intelligent Systems (IC-BIS 2023)

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Soft Tissue Injury in Cervical Spine Is a Risk Factor for Intersegmental Instability: A Finite Element Analysis

Cited by 15 publications

References 30 publications

Biomechanical performance of the novel assembled uncovertebral joint fusion cage in single-level anterior cervical discectomy and fusion: A finite element analysis

Biomechanical performance of the novel assembled uncovertebral joint fusion cage in single-level anterior cervical discectomy and fusion: A finite element analysis

Classification of Cervical Spine Fracture and Dislocation Using Refined Pre-Trained Deep Model and Saliency Map

Simulation of a novel surgical approach to perianal abscesses using three-dimensional finite element method

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