Evidence map›Paper›PMID 42030299›Full record

ArticlePloS one2026

Clip-plate versus suture-anchor in double-door laminoplasty for degenerative cervical myelopathy: Protocol for a multicenter, non-inferiority, randomized controlled trial.

Kentaro Yamada, Kenichiro Sakai, Takashi Hirai, Kazuyuki Fukushima, Takuya Takahashi, Yu Matsukura, Satoru Egawa, Hiroaki Onuma, Motonori Hashimoto, Akihiro Hirakawa and 2 more

Abstract readClinical Trial Protocol
In one paragraph

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

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

12 authors.

Kentaro YamadaDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Kenichiro SakaiDepartment of Orthopaedics, Saiseikai Kawaguchi Sogo Hospital, Saitama, Japan.
Takashi HiraiDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Kazuyuki FukushimaDepartment of Orthopaedics, Saku Medical Center, Saku, Japan.
Takuya TakahashiDepartment of Orthopaedics, Saiseikai Kawaguchi Sogo Hospital, Saitama, Japan.
Yu MatsukuraDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Satoru EgawaDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Hiroaki OnumaDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Motonori HashimotoDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.
Akihiro HirakawaDepartment of Clinical Biostatistics, Institute of Science Tokyo, Tokyo, Japan.
Yoshiyasu AraiDepartment of Orthopaedics, Saiseikai Kawaguchi Sogo Hospital, Saitama, Japan.
Toshitaka YoshiiDepartment of Orthopaedics, Institute of Science Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0003-3511-9020

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDegenerative cervical myelopathy (DCM) is a leading cause of spinal cord dysfunction. While cervical laminoplasty (LAMP) is the standard treatment, the optimal fixation method for the opened lamina, specifically between the conventional suture-anchor method and the modern plate system, remains debated. Although clip-plates offer rigid fixation for the opened lamina, they are associated with higher costs and potential complications such as lamina reclosure due to screw dislodgement or hinge fracture. This study aims to verify the non-inferiority of the suture-anchor method compared to the clip-plate method in double-door LAMP.

methodsThis is a multicenter, open-label, non-inferiority randomized controlled trial. A total of 216 patients with DCM (cervical spondylotic myelopathy [CSM] or ossification of the posterior longitudinal ligament [OPLL]) will be recruited from three high-volume spine centers in Japan. Participants will be randomized (1:1) to undergo double-door LAMP using either clip-plates (control group) or suture-anchors (experimental treatment group). The primary endpoint is the recovery rate of the Japanese Orthopaedic Association (JOA) score at 1 year postoperatively. Secondary endpoints include operative time, blood loss, clinical assessments (EQ-5D-5L, visual analog scale [VAS], and neck disability index [NDI]), radiological outcomes (cervical spinal alignment, lamina retention rate, hinge fracture, bone union, and MRI findings), direct medical costs, and perioperative complications.

conclusionsWe hypothesize that the suture-anchor technique is non-inferior to the clip-plate system regarding neurological recovery and laminar stability. By rigorously comparing these techniques, this trial seeks to establish high-level evidence for a surgical strategy that maintains clinical standards while potentially reducing healthcare costs. TRAIL REGISTRATION: Japan Registry of Clinical Trials (jRCT) jRCT1032250437.

Indexed as

Bone PlatesCervical VertebraeLaminoplastySpinal Cord DiseasesSpondylosisSuture AnchorsEquivalence Trials as TopicFemaleHumansMaleMulticenter Studies as TopicRandomized Controlled Trials as Topic

Identifiers

PMID42030299
PMCPMC13108724

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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.