Evidence map›Paper›PMID 34567608›Full record

ArticleJournal of hip preservation surgery2021

Intrapelvic entrapment of sacral nerve roots by abnormal bundles of the piriformis muscle: description of an extra-spinal cause of sciatica and pudendal neuralgia.

Corey Sermer, Adrienne L K Li, Gustavo L Fernandes, Augusta M Ribeiro, Giancarlo Polesello, Denise Tokechi, Laura Cancelliere, Nucelio Lemos

Open access · diamondAbstract read
In one paragraph

Article in Journal of hip preservation surgery, 2021. 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
1.2field-weighted citation impact, top 22% 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

3 citing papers in PubMed, 12 citations in OpenAlex.

  1. Trial
  2. Applications of Diffusion-Weighted MRI to the Musculoskeletal System.Journal of magnetic resonance imaging : JMRI · 2024
    Review
  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

8 authors at 4 institutions in 2 countries.

Corey SermerMount Sinai Hospital, 700 University Avenue, Room 8-917, Toronto, ON M5S 1Z5, Canada.ORCID https://orcid.org/0000-0002-2310-748X
Adrienne L K LiMount Sinai Hospital, 700 University Avenue, Room 8-917, Toronto, ON M5S 1Z5, Canada.
Gustavo L FernandesDepartment of Gynecology, Federal University of São Paulo. Rua Napoleão de Barros, 608, São Paulo, SP, Brazil.
Augusta M RibeiroDepartment of Gynecology, Federal University of São Paulo. Rua Napoleão de Barros, 608, São Paulo, SP, Brazil.
Giancarlo PoleselloDepartment of Gynecology, Faculdade de Ciências Médicas da Santa Casa de São Paulo. Rua Doutor Cesário Mota Júnior, 42, São Paulo, SP, Brazil.
Denise TokechiDepartment of Radiology, Hospital Sírio-Libanês, Rua Dona Adma Jafet, 91, São Paulo, SP, Brazil.
Laura CancelliereMount Sinai Hospital, 700 University Avenue, Room 8-917, Toronto, ON M5S 1Z5, Canada.
Nucelio LemosMount Sinai Hospital, 700 University Avenue, Room 8-917, Toronto, ON M5S 1Z5, Canada.ORCID https://orcid.org/0000-0002-3184-8229
Mount Sinai Hospital · CAFaculdade de Ciências Médicas da Santa Casa de São Paulo · BRHospital Sírio-Libanês · BRUniversidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Piriformis syndrome is a well-known extra-spinal cause of sciatica characterized by the entrapment of the sciatic nerve by variant bundles of the piriformis muscles in the deep gluteal space. In this case series, we describe the entrapment of intrapelvic portions of the sacral nerve roots by a variant bundle of the piriformis muscle originating medially to the sacral foramina, the surgical technique for the laparoscopic treatment of this condition, and the outcomes of the first eight cases treated with this technique. Five female and three male patients presenting with sciatica, pudendal pain and lower urinary tract symptoms underwent a laparoscopic exploration of the intrapelvic portion of the sacral nerve roots and transection of the abnormal piriformis bundle. Surgical technique is demonstrated in the Supplementary Video. Clinical success was achieved in seven of the eight patients, with a reduction of pain numeric rating scale from 8.5 (±1.2; 7-10) pre-operatively to 2.1 (±2.6; 0-7), 1-year following surgery. In conclusion, entrapment of intrapelvic portions of the sacral nerve roots by variant bundles of the piriformis originating medially to the sacral foramina are an extraspinal cause of sciatica, which can be treated though a laparoscopic approach.

Identifiers

PMID34567608
PMCPMC8460165
OpenAlexW3161576625

What OpenQuestion holds

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LicenceCC BY-NC
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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.