Evidence map›Paper›PMID 40721782›Full record

ArticleBMC musculoskeletal disorders2025

Changes of laminar angle in cervical double-door laminoplasty -comparison of conventional method and suture anchor method using computed tomography images- a pilot study.

Shingo Morishita, Takashi Hirai, Kentaro Yamada, Masato Yuasa, Yu Matsukura, Satoru Egawa, Hiroaki Onuma, Jun Hashimoto, Toshitaka Yoshii

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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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

1 citing paper in PubMed.

  1. Article
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

9 authors.

Shingo MorishitaDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Takashi HiraiDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan. hirai.orth@tmd.ac.jp.
Kentaro YamadaDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Masato YuasaDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Yu MatsukuraDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Satoru EgawaDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Hiroaki OnumaDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Jun HashimotoDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
Toshitaka YoshiiDepartment of Orthopedic Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLaminar closure rarely occurs in conventional laminoplasty (LAMP). Thus, various techniques have been developed to maintain the laminar opening using the suture anchor. However, no studies have examinced the two surgical methods using computed tomography. This study aimed to compare LAMP using the suture anchor and conventional LAMP in terms of laminar opening maintenance.

methodsThis study included patients who underwent double-door LAMP from C3 to C7 according to the Kirita-Miyazaki method (conventional group, where the lamina was sutured to the deep fascia) or using suture anchors (anchor group). The laminar angles from C3 to C6 were measured using cervical spine computed tomography intraoperatively, 1 week postoperatively, and 1 year postoperatively, respectively, in the conventional and anchor groups. We measured the C2-C7 lordotic angle, T1 or C7 slope, and cervical sagittal vertical axis by X-ray and investigated the 1-year postoperative recovery rate with Japanese Orthopaedic Association scores.

resultsThe anchor group consisted of 11 patients and the conventional group consisted of 9 patients. The laminar angles at C4, C5, and C6 were significantly greater in the anchor group both intraoperatively, 1 week postoperatively, and 1 year postoperatively. C3 had a slightly larger laminar angle in the anchor group but was not significant. The C3 laminar angle decreased over time in both groups. The laminar angle for C4, C5, and C6 in the anchor group was maintained intraoperatively to 1 year postoperatively. The laminar angle did not change beyond 1 week postoperatively in the conventional group.

conclusionsThe laminar angle in the anchor group was maintained intraoperatively to 1 year postoperatively, while the conventional group tended to close immediately postoperatively. The suture anchor technique may maintain laminar opening more rigidly than the conventional suture method.

Indexed as

Cervical VertebraeLaminoplastySuture AnchorsTomography, X-Ray ComputedAdultAgedFemaleHumansMaleMiddle AgedPilot ProjectsTreatment OutcomeComputed tomographyLaminar angleLaminoplastySuture anchor

Identifiers

PMID40721782
PMCPMC12305903

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