Sciatic Nerve High Division: Two Different Anatomical Variants
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246 |
Resumo: | Introduction: Sciatic nerve variations are relatively common. These variations are often very significant in several fields of Medicine. The purpose of this paper is to present two such variants and discuss their clinical implications.Material and Methods: Three Caucasian cadavers with no prior history of lower limb trauma or surgery were dissected and found to present anatomical variants of the sciatic nerve.Results: In all cases the sciatic nerve divided above the popliteal fossa. In two cases (cadavers 1 and 2) it divided on both sides in the inferior portion of the gluteal region in its two terminal branches: the common fibular and the tibial nerves. In another case (cadaver 3) the sciatic nerve was found to divide inside the pelvis just before coursing the greater sciatic notch. The common fibular nerve exited the pelvis above the pyriformis muscle and then passed along its posterior aspect, while the tibial nerve coursed deep to the pyriformis muscle.Discussion: According to the literature, the anatomical variant described in cadaver 3 is considered relatively rare. This variant can predispose to nerve entrapment and thus to the pyriformis syndrome, sciatica and coccygodynia. The high division of the sciatic nerve, as presented in cadavers 1 and 2, can make popliteal nerve blocks partially ineffective.Conclusion: The anatomical variants associated with a high division of the sciatic nerve, must always be born in mind, as they are relatively prevalent, and have important clinical implications, namely in Anesthesiology, Neurology, Sports Medicine and Surgery. |
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Sciatic Nerve High Division: Two Different Anatomical VariantsDivisão Alta do Nervo Isquiático: Duas Variantes Anatómicas DistintasIntroduction: Sciatic nerve variations are relatively common. These variations are often very significant in several fields of Medicine. The purpose of this paper is to present two such variants and discuss their clinical implications.Material and Methods: Three Caucasian cadavers with no prior history of lower limb trauma or surgery were dissected and found to present anatomical variants of the sciatic nerve.Results: In all cases the sciatic nerve divided above the popliteal fossa. In two cases (cadavers 1 and 2) it divided on both sides in the inferior portion of the gluteal region in its two terminal branches: the common fibular and the tibial nerves. In another case (cadaver 3) the sciatic nerve was found to divide inside the pelvis just before coursing the greater sciatic notch. The common fibular nerve exited the pelvis above the pyriformis muscle and then passed along its posterior aspect, while the tibial nerve coursed deep to the pyriformis muscle.Discussion: According to the literature, the anatomical variant described in cadaver 3 is considered relatively rare. This variant can predispose to nerve entrapment and thus to the pyriformis syndrome, sciatica and coccygodynia. The high division of the sciatic nerve, as presented in cadavers 1 and 2, can make popliteal nerve blocks partially ineffective.Conclusion: The anatomical variants associated with a high division of the sciatic nerve, must always be born in mind, as they are relatively prevalent, and have important clinical implications, namely in Anesthesiology, Neurology, Sports Medicine and Surgery.Introdução: As variações do nervo isquiático são relativamente comuns e frequentemente muito significativas clinicamente. O objetivo deste trabalho é apresentar duas destas variações e discutir algumas das suas implicações clínicas.Material e Métodos: Três cadáveres caucasianos sem história prévia de trauma ou cirurgia no membro inferior foram dissecados, apresentando variações anatómicas do nervo isquiático.Resultados: Em todos os casos o nervo isquiático dividia-se acima da fossa poplítea.Em dois casos (cadáveres1 e 2) a terminação deste nervo ocorria na porção inferior da região glútea nos seus dois ramos terminais: os nervos fibular comum e tibial. Num outro caso (cadáver 3), o nervo isquiático dividia-se ainda dentro da bacia antes de percorrer a incisura isquiática maior. Neste caso, o nervo fibular comum saía da pelve acima do músculo piriforme, passando em seguida ao longo de sua face posterior, enquanto que o nervo tibial corria profundamente ao músculo piriforme.Discussão: De acordo com a literatura, a variante anatómica descrita no cadáver 3 é considerada relativamente rara. Esta variante poderá predispor a síndromes compressivos do nervo isquiático. A divisão alta do nervo isquiático, de que são exemplos os cadáveres 1 e 2, pode comprometer a eficácia dos bloqueios anestésicos ao nível da fossa poplítea.Conclusão: As variantes anatómicas associadas à divisão alta do nervo isquiático devem sempre ser tidas em consideração porserem relativamente comuns e terem importantes implicações clínicas, nomeadamente nas áreas de Anestesiologia, Neurologia, Medicina do Desporto e Cirurgia.Ordem dos Médicos2013-06-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246oai:ojs.www.actamedicaportuguesa.com:article/4246Acta Médica Portuguesa; Vol. 26 No. 3 (2013): May-June; 208-211Acta Médica Portuguesa; Vol. 26 N.º 3 (2013): Maio-Junho; 208-2111646-07580870-399Xreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246/3351Pais, DiogoCasal, DiogoBettencourt Pires, Maria AlexandreFurtado, AndreaBilhim, TiagoAngélica-Almeida, MariaGoyri-O'Neill, Joãoinfo:eu-repo/semantics/openAccess2022-12-20T11:03:29Zoai:ojs.www.actamedicaportuguesa.com:article/4246Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:18:46.038744Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Sciatic Nerve High Division: Two Different Anatomical Variants Divisão Alta do Nervo Isquiático: Duas Variantes Anatómicas Distintas |
title |
Sciatic Nerve High Division: Two Different Anatomical Variants |
spellingShingle |
Sciatic Nerve High Division: Two Different Anatomical Variants Pais, Diogo |
title_short |
Sciatic Nerve High Division: Two Different Anatomical Variants |
title_full |
Sciatic Nerve High Division: Two Different Anatomical Variants |
title_fullStr |
Sciatic Nerve High Division: Two Different Anatomical Variants |
title_full_unstemmed |
Sciatic Nerve High Division: Two Different Anatomical Variants |
title_sort |
Sciatic Nerve High Division: Two Different Anatomical Variants |
author |
Pais, Diogo |
author_facet |
Pais, Diogo Casal, Diogo Bettencourt Pires, Maria Alexandre Furtado, Andrea Bilhim, Tiago Angélica-Almeida, Maria Goyri-O'Neill, João |
author_role |
author |
author2 |
Casal, Diogo Bettencourt Pires, Maria Alexandre Furtado, Andrea Bilhim, Tiago Angélica-Almeida, Maria Goyri-O'Neill, João |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Pais, Diogo Casal, Diogo Bettencourt Pires, Maria Alexandre Furtado, Andrea Bilhim, Tiago Angélica-Almeida, Maria Goyri-O'Neill, João |
description |
Introduction: Sciatic nerve variations are relatively common. These variations are often very significant in several fields of Medicine. The purpose of this paper is to present two such variants and discuss their clinical implications.Material and Methods: Three Caucasian cadavers with no prior history of lower limb trauma or surgery were dissected and found to present anatomical variants of the sciatic nerve.Results: In all cases the sciatic nerve divided above the popliteal fossa. In two cases (cadavers 1 and 2) it divided on both sides in the inferior portion of the gluteal region in its two terminal branches: the common fibular and the tibial nerves. In another case (cadaver 3) the sciatic nerve was found to divide inside the pelvis just before coursing the greater sciatic notch. The common fibular nerve exited the pelvis above the pyriformis muscle and then passed along its posterior aspect, while the tibial nerve coursed deep to the pyriformis muscle.Discussion: According to the literature, the anatomical variant described in cadaver 3 is considered relatively rare. This variant can predispose to nerve entrapment and thus to the pyriformis syndrome, sciatica and coccygodynia. The high division of the sciatic nerve, as presented in cadavers 1 and 2, can make popliteal nerve blocks partially ineffective.Conclusion: The anatomical variants associated with a high division of the sciatic nerve, must always be born in mind, as they are relatively prevalent, and have important clinical implications, namely in Anesthesiology, Neurology, Sports Medicine and Surgery. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-21 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246 oai:ojs.www.actamedicaportuguesa.com:article/4246 |
url |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246 |
identifier_str_mv |
oai:ojs.www.actamedicaportuguesa.com:article/4246 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246 https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/4246/3351 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Ordem dos Médicos |
publisher.none.fl_str_mv |
Ordem dos Médicos |
dc.source.none.fl_str_mv |
Acta Médica Portuguesa; Vol. 26 No. 3 (2013): May-June; 208-211 Acta Médica Portuguesa; Vol. 26 N.º 3 (2013): Maio-Junho; 208-211 1646-0758 0870-399X reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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