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A morphologic and histologic study of the radial nerve and its branches at potential compression sites

OBJECTIVES: This study examined variations in the termination level of the radial nerve (RN) and the morphometry of the RN and its branches at potential compression sites. Additionally, we digitally analysed histological sections of the RN, the superficial branch of the radial nerve (SBRN), and the...

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Autores principales: Nair, Shreya, Ankolekar, Vrinda H., Hosapatna, Mamatha, DSouza, Anne
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taibah University 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7564898/
https://www.ncbi.nlm.nih.gov/pubmed/33132807
http://dx.doi.org/10.1016/j.jtumed.2020.07.009
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author Nair, Shreya
Ankolekar, Vrinda H.
Hosapatna, Mamatha
DSouza, Anne
author_facet Nair, Shreya
Ankolekar, Vrinda H.
Hosapatna, Mamatha
DSouza, Anne
author_sort Nair, Shreya
collection PubMed
description OBJECTIVES: This study examined variations in the termination level of the radial nerve (RN) and the morphometry of the RN and its branches at potential compression sites. Additionally, we digitally analysed histological sections of the RN, the superficial branch of the radial nerve (SBRN), and the posterior interosseous nerve (PIN). METHODS: We conducted this study on 14 formalin fixed adult cadavers. The lengths of the RN, SBRN, and PIN were measured up to potential compression sites, using appropriate surface skeletal landmarks as reference points. We histologically evaluated the fascicular and non-fascicular areas and the number of axons in each nerve. All parameters were statistically analysed using a paired t-test. RESULTS: We found variations in the bifurcation of the RN with respect to the biepicondylar line (BEL). However, the course of RN terminal branches was constant in the forearm. There was a significant histological difference between the fascicular and non-fascicular areas of the PIN. There was no significant difference in the total number of axons in the SBRN and PIN. Finally, we observed that the intramuscular length of the PIN within the supinator muscle was variable and that the SBRN had more fascicles compared to the RN and PIN. CONCLUSIONS: In our study, the RN and PIN had more variable morphometry compared to that of the SBRN. The histologic evaluation and quantification of these nerves at their potential compression sites could serve as a guide for surgeons planning nerve reconstruction procedures.
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spelling pubmed-75648982020-10-29 A morphologic and histologic study of the radial nerve and its branches at potential compression sites Nair, Shreya Ankolekar, Vrinda H. Hosapatna, Mamatha DSouza, Anne J Taibah Univ Med Sci Original Article OBJECTIVES: This study examined variations in the termination level of the radial nerve (RN) and the morphometry of the RN and its branches at potential compression sites. Additionally, we digitally analysed histological sections of the RN, the superficial branch of the radial nerve (SBRN), and the posterior interosseous nerve (PIN). METHODS: We conducted this study on 14 formalin fixed adult cadavers. The lengths of the RN, SBRN, and PIN were measured up to potential compression sites, using appropriate surface skeletal landmarks as reference points. We histologically evaluated the fascicular and non-fascicular areas and the number of axons in each nerve. All parameters were statistically analysed using a paired t-test. RESULTS: We found variations in the bifurcation of the RN with respect to the biepicondylar line (BEL). However, the course of RN terminal branches was constant in the forearm. There was a significant histological difference between the fascicular and non-fascicular areas of the PIN. There was no significant difference in the total number of axons in the SBRN and PIN. Finally, we observed that the intramuscular length of the PIN within the supinator muscle was variable and that the SBRN had more fascicles compared to the RN and PIN. CONCLUSIONS: In our study, the RN and PIN had more variable morphometry compared to that of the SBRN. The histologic evaluation and quantification of these nerves at their potential compression sites could serve as a guide for surgeons planning nerve reconstruction procedures. Taibah University 2020-08-21 /pmc/articles/PMC7564898/ /pubmed/33132807 http://dx.doi.org/10.1016/j.jtumed.2020.07.009 Text en © 2020 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Nair, Shreya
Ankolekar, Vrinda H.
Hosapatna, Mamatha
DSouza, Anne
A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title_full A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title_fullStr A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title_full_unstemmed A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title_short A morphologic and histologic study of the radial nerve and its branches at potential compression sites
title_sort morphologic and histologic study of the radial nerve and its branches at potential compression sites
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7564898/
https://www.ncbi.nlm.nih.gov/pubmed/33132807
http://dx.doi.org/10.1016/j.jtumed.2020.07.009
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