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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Taibah University
2020
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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. |
format | Online Article Text |
id | pubmed-7564898 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Taibah University |
record_format | MEDLINE/PubMed |
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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