Sciatic Nerve Variants and the Piriformis Muscle: A Systematic Review and Meta-Analysis.
abnormality
anatomy
anomaly
piriformis muscle
sciatic nerve
variation
Journal
Cureus
ISSN: 2168-8184
Titre abrégé: Cureus
Pays: United States
ID NLM: 101596737
Informations de publication
Date de publication:
17 Nov 2020
17 Nov 2020
Historique:
entrez:
23
12
2020
pubmed:
24
12
2020
medline:
24
12
2020
Statut:
epublish
Résumé
The present systematic review and meta-analysis provides a comprehensive assessment of the sciatic nerve (SN) variants relative to the piriformis muscle (PM) and compares those variants' prevalence among different geographical populations with respect to gender and laterality. A database search was conducted to identify cadaveric studies pertinent to SN variants relative to the PM. A total of 44 articles were included. The typical morphological pattern (type A, with the SN passing undivided below the PM) was found to be the most common variant, with 90% pooled prevalence. SN variants were more common among East Asians, with a 31% pooled prevalence of total variants. No significant differences were established with respect to gender and laterality. In greater than 10% of the population, the SN coursed through or above piriformis. Patients' epidemiological characteristics may predispose them to certain variants. The common peroneal nerve (CPN) is more susceptible to injury during a total hip arthroplasty or a hip arthroscopy where anomalies are encountered. As anatomical variants are commonly associated with piriformis syndrome, they should always be considered during diagnosis and treatment.
Identifiants
pubmed: 33354475
doi: 10.7759/cureus.11531
pmc: PMC7746330
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
e11531Informations de copyright
Copyright © 2020, Poutoglidou et al.
Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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