Evidence map›Paper›PMID 36212764›Full record

ArticleRadiology case reports2022

A rare incidental finding of an isolated S1 butterfly vertebra: A case report.

Vikash Bhattarai, Sanjeev Kharel, Sandeep Mahat, Sandip Kuikel, Amir Joshi, Amit Sharma, Sulav Acharya

Open access · goldAbstract readCase Reports
PubMed Full text at PMC Publisher
In one paragraph

Article in Radiology case reports, 2022. 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
0.3field-weighted citation impact, top 43% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Two Cases of Singular Sacral S1 Butterfly Vertebra.Diagnostics (Basel, Switzerland) · 2025
    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

7 authors at 2 institutions in 1 country.

Vikash BhattaraiDepartment of Radiodiagnosis and Imaging, National Academy of Medical Sciences, Bir Hospital, Kathmandu, Nepal.
Sanjeev KharelMaharajgunj Medical Campus, Tribhuvan University Institute of Medicine, Kathmandu, Nepal.
Sandeep MahatDepartment of Radiodiagnosis and Imaging, National Academy of Medical Sciences, Bir Hospital, Kathmandu, Nepal.
Sandip KuikelMaharajgunj Medical Campus, Tribhuvan University Institute of Medicine, Kathmandu, Nepal.
Amir JoshiMaharajgunj Medical Campus, Tribhuvan University Institute of Medicine, Kathmandu, Nepal.
Amit SharmaMaharajgunj Medical Campus, Tribhuvan University Institute of Medicine, Kathmandu, Nepal.
Sulav AcharyaMaharajgunj Medical Campus, Tribhuvan University Institute of Medicine, Kathmandu, Nepal.
Tribhuvan University Teaching Hospital · NPBir Hospital · NP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Butterfly vertebra is an uncommon type of vertebral anomaly (sometimes referred to as a sagittal cleft vertebra or an anterior rachischisis) caused by persistent notochordal tissue. Butterfly vertebrae of S1, which is rarer anomaly compared to thoraco-lumbar region, may be associated with syndromic causes and usually asymptomatic with a funnel shaped defect seen in imaging which can later give rise to disk problems, facet joint degeneration and chronic low back pain. We here share a case of 35-year female presented with intermittent low back pain diagnosed with S1 butterfly vertebrae as an incidental finding in radiograph and magnetic resonance imaging. Radiologist and orthopedicians should be vigilant about this rare entity as a differential of low back pain and its association with other syndromes.

Indexed as

Butterfly vertebraeLow back painMagnetic resonance imagingSacrum

Identifiers

PMID36212764
PMCPMC9535292
OpenAlexW4301373968

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.