Evidence map›Paper›PMID 33486626›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2021

Predictive factors for correction rate in severe idiopathic scoliosis (Cobb angle ≥ 90°): an analysis of 128 patients.

Yuki Mihara, Weng Hong Chung, Siti Mariam Mohamad, Chee Kidd Chiu, Chris Yin Wei Chan, Mun Keong Kwan

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In one paragraph

Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 29% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. One-stage posterior-only correction in severe and rigid scoliosis exceeding 90°: radiographic and surgical outcomes.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
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 2 countries.

Yuki MiharaDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Weng Hong ChungDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Siti Mariam MohamadDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Chee Kidd ChiuDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Chris Yin Wei ChanDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
Mun Keong KwanDepartment of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia. munkeong42@hotmail.com.ORCID 0000-0002-9512-3155
University of Malaya · MYHamamatsu University School of Medicine · JPUniversity Malaya Medical Centre · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeKnowledge on the factors affecting the correction rate (CR) aids in the surgical planning among severe idiopathic scoliosis (IS) patients. This study aimed to investigate the independent factors affecting CR among patients with severe IS (Cobb angle ≥ 90°) who underwent single-staged posterior spinal fusion (PSF).

methodsWe retrospectively reviewed 128 severe IS patients who underwent single-staged PSF. Factors including age, height, weight, body mass index, Risser sign, Lenke subtypes, preoperative major Cobb angle, side bending major Cobb angle, side bending flexibility (SBF), motion segments of the major curve, AR curve, number of levels fused, screw density, operative time and postoperative major Cobb angle were analysed using linear regression analysis.

resultsThe mean age was 15.5 ± 4.5 years with mean Risser sign of 3.1 ± 1.6. The mean preoperative Cobb, SBF, postoperative Cobb and CR were 102.8 ± 12.3°, 37.5 ± 13.7%, 44.4 ± 13.5° and 57.2 ± 10.8%, respectively. From stepwise multiple linear regression analysis, SBF, Risser sign and AR curve were the independent predictive factors for CR, with R

conclusionThe flexibility of the major curve, Risser sign and AR curve were the most important predictors for CR in a single-staged PSF among patients with severe IS.

Indexed as

ScoliosisSpinal FusionAdolescentAdultChildHumansRadiographyRetrospective StudiesThoracic VertebraeTreatment OutcomeYoung AdultCorrection ratePosterior spinal fusionPredictive factorRisser signSevere scoliosisSide bending flexibility

Identifiers

PMID33486626
OpenAlexW3121325736

What OpenQuestion holds

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Registered trials

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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.