Evidence map›Paper›PMID 39443893›Full record

ArticleBMC musculoskeletal disorders2024

Combined effect of artificial cervical disc replacement and facet tropism on the index-level facet joints: a finite element study.

Jing Li, Yuxiao Deng, Junqi Zhang, Beiyu Wang, Kangkang Huang, Hao Liu, Xin Rong

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In one paragraph

Article in BMC musculoskeletal disorders, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Jing Li *Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Yuxiao Deng *Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Junqi ZhangDepartment of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Beiyu WangDepartment of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Kangkang HuangDepartment of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Hao LiuDepartment of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
Xin RongDepartment of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China. rongxin@scu.edu.cn.

Funding

Sichuan Provincial Department of Science and Technology Applied Basic Research 2022NSFSC0595
6 · The paper itself

Abstract

backgroundArtificial Cervical Disc Replacement (ACDR) is an effective treatment for cervical degenerative disc diseases. However, clinical information regarding the facet joint alterations after ACDR was limited. Facet tropism is common in the sub-axial cervical spine. Our previous research indicated that facet tropism could lead to increased pressure on the cervical facet joints. This study aimed to assess the impact of facet tropism on the facet contact force and facet capsule stress after ACDR.

methodsA C2-T1 cervical finite element model was constructed from computed tomography (CT) scans of a 28-year-old male volunteer. Symmetrical, moderate asymmetrical (7 degrees tropism), and severe asymmetrical (14 degrees tropism) models were created at the C5/C6 level by altering the facet orientation at the C5-C6 level. The C5/C6 ACDR was simulated in the intact, moderate asymmetrical and severe asymmetrical models. A 75-N follower load with 1.0-Nm moments was applied to the top of C2 vertebra in the models to simulate flexion, extension, lateral bending, and axial rotation with the T1 vertebra fixed. The range of motions (ROMs) under all moments, facet contact forces (FCFs) and facet capsule strains were tested.

resultsIn the asymmetrical model, the right FCFs considerably increased under flexion, extension, right bending, left rotation, especially under right bending the right sided FCF of the severe asymmetrical model was about 5.44 times of the neutral position, and 3.14 times of the symmetrical model. and concentrated on the cephalad part of the facets. The facet capsule stresses on both sides remarkably increased under extension, lateral bending and right rotation. In the moderate and severe asymmetrical models, the capsule strain was greater on both sides of each position than in the symmetric model.

conclusionsThe face tropism increased facet contact force and facet capsule strain after ACDR, especially under extension, lateral bending, and rotation, and also could result in abnormal stress distribution on the facet joint surface and facet joint capsule. The results suggest that face tropism might be a risk factor for post-operative facet joint degeneration progression after ACDR. Facet tropism may be noteworthy when ACDR is considered as a surgical option.

Indexed as

Cervical VertebraeFinite Element AnalysisRange of Motion, ArticularTotal Disc ReplacementZygapophyseal JointAdultBiomechanical PhenomenaHumansIntervertebral DiscIntervertebral Disc DegenerationMaleStress, MechanicalTomography, X-Ray ComputedTropismArtificial cervical disc replacementBiomechanicsFacet tropismFinite element

Identifiers

PMID39443893
PMCPMC11515681

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.