Evidence map›Paper›PMID 34254195›Full record

ReviewNeurosurgical review2022

Is there a morphometric cause of Chiari malformation type I? Analysis of existing literature.

William H Shuman, Aislyn DiRisio, Alejandro Carrasquilla, Colin D Lamb, Addison Quinones, Aymeric Pionteck, Yang Yang, Mehmet Kurt, Raj K Shrivastava

Abstract readReview
PubMed Publisher
In one paragraph

Review in Neurosurgical review, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. MRI-morphometric characterization of Chiari malformation types 0 and 1 with syringomyelia: implications for diagnosis and pathogenesis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Observational
  4. Article
  5. Article
  6. A test of the ArchaicEvolution, medicine, and public health · 2025
    Article
  7. The Genetics of Chiari 1 Malformation.Journal of clinical medicine · 2024
    Review
  8. Article
  9. A new supportive approach in the diagnosis of Chiari malformation type 1 in pediatric patients.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2023
    Article
  10. Article
  11. 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

9 authors at 2 institutions in 1 country.

William H ShumanDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA. will.shuman@icahn.mssm.edu.
Aislyn DiRisioDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA.
Alejandro CarrasquillaDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA.
Colin D LambDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA.
Addison QuinonesDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA.
Aymeric PionteckDepartment of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, USA.
Yang YangDepartment of Diagnostic, Molecular, and Interventional Radiology, Icahn School of Medicine At Mount Sinai, New York, NY, USA.
Mehmet KurtDepartment of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, USA.
Raj K ShrivastavaDepartment of Neurosurgery, Icahn School of Medicine At Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA.
Icahn School of Medicine at Mount Sinai · USStevens Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although many etiologies have been proposed for Chiari malformation type I (CM-I), there currently is no singular known cause of CM-I pathogenesis. Advances in imaging have greatly progressed the study of CM-I. This study reviews the literature to determine if an anatomical cause for CM-I could be proposed from morphometric studies in adult CM-I patients. After conducting a literature search using relevant search terms, two authors screened abstracts for relevance. Full-length articles of primary morphometric studies published in peer-reviewed journals were included. Detailed information regarding methodology and symptomatology, craniocervical instability, syringomyelia, operative effects, and genetics were extracted. Forty-six studies met inclusion criteria, averaging 93.2 CM-I patients and 41.4 healthy controls in size. To obtain measurements, 40 studies utilized MRI and 10 utilized CT imaging, whereas 41 analyzed parameters within the posterior fossa and 20 analyzed parameters of the craniovertebral junction. The most commonly measured parameters included clivus length (n = 30), tonsillar position or descent (n = 28), McRae line length (n = 26), and supraocciput length (n = 26). While certain structural anomalies including reduced clivus length have been implicated in CM-I, there is a lack of consensus on how several other morphometric parameters may or may not contribute to its development. Heterogeneity in presentation with respect to the extent of tonsillar descent suggests alternate methods utilizing morphometric measurements that may help to identify CM-I patients and may benefit future research to better understand underlying pathophysiology and sequelae such as syringomyelia.

Indexed as

Arnold-Chiari MalformationSyringomyeliaAdultCranial Fossa, PosteriorHumansMagnetic Resonance ImagingAnatomyChiariImagingMalformationMorphometricMorphometric AnalysisRadiographyReviewSymptomatologyType 1

Identifiers

PMID34254195
OpenAlexW3179466670

What OpenQuestion holds

Textmetadata
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.