Evidence map›Paper›PMID 42443835›Full record

ArticleBMC musculoskeletal disorders2026

Finite element biomechanical evaluation of a novel double-door screw-plate system for posterior cervical laminoplasty.

Zhihao Kang, Kaibin Wang, Haipeng Si, Chongyi Wang, Yanwei Zhang, Wencan Zhang, Junfei Chen, Chen Liu, Yunze Feng, Wanlong Xu and 1 more

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In one paragraph

Article in BMC musculoskeletal disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Zhihao Kang *Department of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Kaibin Wang *Department of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Haipeng Si *Department of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Chongyi WangDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Yanwei ZhangDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Wencan ZhangDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Junfei ChenDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Chen LiuDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Yunze FengDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Wanlong XuDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China.
Le LiDepartment of Orthopedics, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Shandong University, Jinan, 250012, Shandong, China. qiluhosp_orthoplee@163.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo address the surgical challenges and postoperative implant displacement associated with conventional internal fixation techniques in posterior cervical double-door laminoplasty, we developed the double-door screw-plate system (DDSPS). PURPOSE: This study aimed to evaluate the biomechanical effects of DDSPS using finite element (FE) analysis.

methodsAn intact adult cervical spine FE model and three postoperative fixation models representing the DDSPS, the LA lamina staple, and the hydroxyapatite (HA) spacer construct were developed. Under a 75 N follower load and a 2.0 N·m moment applied in six loading directions, ROM, mean von Mises stress, implant-bone interface micromotion, and DDSPS stress distribution were evaluated.

resultsAcross the six loading directions, all three postoperative models showed a similar overall kinematic pattern, with the greatest increase in ROM occurring during flexion and only limited changes in the remaining directions. The DDSPS and LA lamina staple models demonstrated markedly lower implant-bone interface micromotion than the HA spacer model (DDSPS CSLIP1/2: 0.0008/0.0021 mm; LA lamina staple: 0.0020/0.0019 mm; HA spacer: 0.2506/0.1560 mm). In the DDSPS model, implant stress was mainly concentrated around the connecting axis, the plate surrounding the axial-side screw holes, and the axial-side fixation screws, with maximum stresses of 48.70 MPa in the plate and 67.09 MPa in the screw.

conclusionWithin the present finite element framework, the double-door screw-plate system (DDSPS) demonstrated a more favorable initial biomechanical profile, including lower interface micromotion and greater construct stability than the reference constructs.

Indexed as

Bone PlatesBone ScrewsCervical VertebraeFinite Element AnalysisLaminoplastyBiomechanical PhenomenaHumansRange of Motion, ArticularBiomechanical propertiesCervical spondylotic myelopathyDouble-door screw-plate systemFinite element analysisInternal fixation comparisonPosterior cervical double-door laminoplastyvon Mises stress

Identifiers

PMID42443835
PMCPMC13471383

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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.