Evidence map›Paper›PMID 30544458›Full record

SynthesisMedicine2018

Comparison of anchor screw fixation versus mini-plate fixation in unilateral expansive open-door laminoplasty for the treatment of multi-level cervical spondylotic myelopathy.

Xiang Lin, Kaiwei Chen, Haijun Tang, Xianying Huang, Changwu Wei, Zengming Xiao

Open access · goldAbstract readComparative StudyMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.2field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Techniques for Cervical Laminoplasty.Global spine journal · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Xiang LinDepartment of Musculoskeletal Oncology, Affiliated Tumor Hospital of Guangxi Medical University.
Kaiwei ChenDepartment of Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Haijun TangDepartment of Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Xianying HuangDepartment of Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Changwu WeiDepartment of Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Zengming XiaoDepartment of Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Guangxi Medical University · CNFirst Affiliated Hospital of GuangXi Medical University · CNTumor Hospital of Guangxi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designSystematic review and meta-analysis.

backgroundAnchor screw fixation and mini-plate fixation are widely used in unilateral open-door laminoplasty. There is a great controversy over the preferred fixation method. The purpose of this study is to evaluate the clinical outcomes between anchor screw fixation and mini-plate fixation for the treatment of multilevel cervical spondylotic myelopathy (MCSM).

methodsRelated studies that compared the clinical effectiveness of anchor screw fixation and mini-plate fixation in cervical laminoplasty for the treatment of MCSM were acquired by a comprehensive search in PubMed, Embase, the Cochrane library, CNKI, VIP, and WANFANG up to March, 2018. Included studies were evaluated according to eligibility criteria. The main end points included: preoperative Japanese Orthopedic Association (JOA) scores, postoperative JOA scores, JOA scores improvement rate, preoperative and postoperative cervical range of motion (ROM), preoperative and postoperative cervical curvature index (CCI), lamina open angle, operation time, blood loss, C5 nerve palsy rate and axial symptoms rate.

resultsPapers in English and Chinese were searched for the initial review, but only 12 articles in Chinese were included in this meta-analysis. All of the selected studies were of high quality as indicated by the Newcastle-Ottawa scale (NOS). Among 809 patients, 372 underwent anchor screw fixation and 437 underwent mini-plate fixation. The results of this meta-analysis indicated that no significant difference was found in preoperative JOA score, JOA scores improvement rate, preoperative CCI, preoperative ROM, C5 palsy rate and blood loss. However, compared with mini-plate fixation, anchor screw fixation patients showed higher axial symptoms rate [RR = 1.75, 95% CI (1.31, 2.35), P <.05], lower postoperative JOA scores [SMD = -0.38, 95% CI (-0.62, -0.15), P <.05], lower postoperative CCI [SMD = -0.64, 95% CI (-0.94, -0.33), P <.05], lower postoperative ROM [SMD = -1.11, 95% CI (-2.18, -0.04), P <.05], smaller lamina open angle [SMD = -1.98, 95% CI (-3.71, -0.24), P <.05], shorter operation time [SMD = -0.33, 95% CI (-0.59, -0.07), P <.05].

conclusionsCompared with anchor screw fixation, mini-plate fixation in cervical laminoplasty appears to achieve better clinical and radiographic outcomes with fewer surgical complications. However, future well-designed, randomized controlled trials are still needed to further confirm our results.

Indexed as

Bone PlatesBone ScrewsCervical VertebraeHumansLaminoplastySpinal Cord DiseasesSpondylosis

Identifiers

PMID30544458
PMCPMC6310594
OpenAlexW2903736452

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.