Evidence map›Paper›PMID 39417909›Full record

ReviewActa neurologica Belgica2025

Primary hemifacial spasm: anatomical insights.

Mehri Salari, Alireza Alikhani, Kimia Vakili, Mobina Fathi, Masoud Etemadifar

Abstract readReview
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In one paragraph

Review in Acta neurologica Belgica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

5 authors.

Mehri SalariDepartment of Neurology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0001-7102-821X
Alireza AlikhaniFunctional Neurosurgery Research Center, Shohada Tajrish Comprehensive Neurosurgical Center of Excellence, Shohada Tajrish Hospital, Tajrish Square, Tehran, Iran. a.alikhany@sbmu.ac.ir.ORCID http://orcid.org/0000-0001-6823-9198
Kimia VakiliStudent Research Committee, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0001-7296-3218
Mobina FathiStudent Research Committee, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-4811-3982
Masoud EtemadifarDepartment of Neurosurgery, Isfahan Medical University, Isfahan, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrimary Hemifacial Spasm (pHFS) is a disorder caused by compression of vessels on the root of the facial nerve. There has been conflicting evidence regarding the side of the face that is more frequently affected. Moreover, it has been found in several studies that women are afflicted by approximately twice as many as men.

objectivesWe reviewed the literature to explain HFS tendencies from an anatomical aspect. We wanted to see whether there are anatomical variations that can increase the risk of developing HFS or underlie its tendency to a specific gender and side of the face. METHODS AND MATERIAL: A PubMed search was done for the articles on "Hemifacial Spasm" published in English literature, and we selected the articles regarding the significant anatomical differences in HFS patients.

resultsAICA proximal branching pattern, highly originated PICA, VA dominancy, and VA deviation are among the predisposing anatomical variances. Overall, both sides of the face are equally affected in HFS. However, there are side preferences based on the causative vessels, which may be due to differences in the anatomical features of the left and right side vessels.

conclusionsVarious anatomical variations regarding posterior circulation can increase the risk of HFS. Recent evidence suggests whether there is no side dominance or a tendency exists toward the left side. There is no comprehensive explanation for precise reasons underlying the tendency of HFS to affect women. Evidence regarding anatomical variations of the posterior circulation comparing men and women with HFS is scarce, and further studies are required.

Indexed as

Facial NerveHemifacial SpasmFemaleHumansMaleHemifacial spasmNeurovascular compressionPosterior circulationPosterior fossaSide dominance

Identifiers

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.