Evidence map›Paper›PMID 39320698›Full record

SynthesisSpine deformity2025

Deep learning in Cobb angle automated measurement on X-rays: a systematic review and meta-analysis.

Yuanpeng Zhu, Xiangjie Yin, Zefu Chen, Haoran Zhang, Kexin Xu, Jianguo Zhang, Nan Wu

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Spine deformity, 2025. 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
–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

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

  1. Pooled it
  2. Article
  3. Review
  4. Identifying scoliosis in a population-based adult cohort: automation of a validated method based on total body dual energy X-ray absorptiometry scans.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 · 2026
    Article
  5. Article
  6. Review
  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

7 authors.

Yuanpeng Zhu *Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.ORCID http://orcid.org/0009-0009-6365-9981
Xiangjie Yin *Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.ORCID http://orcid.org/0000-0002-5543-4514
Zefu ChenDepartment of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.ORCID http://orcid.org/0009-0002-9019-8788
Haoran ZhangDepartment of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.ORCID http://orcid.org/0000-0002-7929-9003
Kexin XuDepartment of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.ORCID http://orcid.org/0009-0007-0502-4430
Jianguo ZhangDepartment of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China. jgzhang_pumch@yahoo.com.ORCID http://orcid.org/0000-0003-3129-5190
Nan WuDepartment of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China. dr.wunan@pumch.cn.ORCID http://orcid.org/0000-0002-9429-2889

Funding

CAMS Innovation Fund for Medical Sciences 2021-I2M-1-051CAMS Innovation Fund for Medical Sciences 2021-I2M-1-052CAMS Innovation Fund for Medical Sciences 2022-I2M-2-001CAMS Innovation Fund for Medical Sciences 2023-I2M-C&T-A-003National High Level Hospital Clinical Research Funding 2022-PUMCH-C-033National High Level Hospital Clinical Research Funding 2022-PUMCH-D-002National High Level Hospital Clinical Research Funding 2022-PUMCH-D-004National Key Research and Development Program of China 2023YFC2507700
6 · The paper itself

Abstract

purposeThis study aims to provide an overview of different deep learning algorithms (DLAs), identify the limitations, and summarize potential solutions to improve the performance of DLAs.

methodsWe reviewed eligible studies on DLAs for automated Cobb angle estimation on X-rays and conducted a meta-analysis. A systematic literature search was conducted in six databases up until September 2023. Our meta-analysis included an evaluation of reported circular mean absolute error (CMAE) from the studies, as well as a subgroup analysis of implementation strategies. Risk of bias was assessed using the revised Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2). This study was registered in PROSPERO prior to initiation (CRD42023403057).

resultsWe identified 120 articles from our systematic search (n = 3022), eventually including 50 studies in the systematic review and 17 studies in the meta-analysis. The overall estimate for CMAE was 2.99 (95% CI 2.61-3.38), with high heterogeneity (94%, p < 0.01). Segmentation-based methods showed greater accuracy (p < 0.01), with a CMAE of 2.40 (95% CI 1.85-2.95), compared to landmark-based methods, which had a CMAE of 3.31 (95% CI 2.89-3.72).

conclusionsAccording to our limited meta-analysis results, DLAs have shown relatively high accuracy for automated Cobb angle measurement. In terms of CMAE, segmentation-based methods may perform better than landmark-based methods. We also summarized potential ways to improve model design in future studies. It is important to follow quality guidelines when reporting on DLAs.

Indexed as

Deep LearningRadiographyAlgorithmsHumansCobb angleDeep learningMeta-analysisScoliosisX-Rays

Identifiers

PMID39320698
PMCPMC11729091

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.