Evidence map›Paper›PMID 42232456›Full record

ArticleSurgical neurology international2026

OS odontoideum in an achondroplastic adult - A case report and review.

Reza Mollahouseini, Abolfazl Rahimizadeh, Walter Wiliamson

Abstract readCase Reports
In one paragraph

Article in Surgical neurology international, 2026. 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

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

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

3 authors.

Reza MollahouseiniDepartment Neurosurgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran.
Abolfazl RahimizadehPars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran.
Walter WiliamsonThe Office of Clinical Research (OCR), Baylor College of Medicine, Houston, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Achondroplasia is a rare genetic disorder affecting bone development, resulting in disproportionate short stature. The coexistence of os odontoideum (OO) in individuals with achondroplasia is exceptionally uncommon. Case Description: We present the case of a 29-year-old female with achondroplasia who experienced progressive weakness in the extremities, ultimately leading to difficulty in ambulation. Radiographic evaluation revealed an atlantoaxial dislocation secondary to an unstable OO. Surgical stabilization of C1-C2 resulted in gradual yet significant neurological recovery. Conclusion: Since the first reported case in 1974, only a limited number of achondroplastic individuals with atlantoaxial dislocation due to OO have been documented.

Indexed as

AchondroplasiaAtlantoaxial dislocationDwarfismMyelopathyOs odontoideum

Identifiers

PMID42232456
PMCPMC13224257

What OpenQuestion holds

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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.