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      The intercostobrachial nerve as a sensory donor for hand reinnervation in brachial plexus reconstruction is a feasible technique and may be useful for restoring sensation Translated title: O uso do nervo intercostobraquial como doador na restauração cirúrgica da sensibilidade da mão em lesões do plexo braquial é uma técnica anatomicamente viável e pode ser útil para a recuperação sensitiva

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          Abstract

          ABSTRACT Objective Few donors are available for restoration of sensibility in patients with complete brachial plexus injuries. The objective of our study was to evaluate the anatomical feasibility of using the intercostobrachial nerve (ICBN) as an axon donor to the lateral cord contribution to the median nerve (LCMN). Methods Thirty cadavers were dissected. Data of the ICBN and the LCMN were collected, including diameters, branches and distances. Results The diameters of the ICBN and the LCMN at their point of coaptation were 2.7mm and 3.7mm, respectively. The ICBN originated as a single trunk in 93.3% of the specimens and bifurcated in 73.3%. The distance between the ICBN origin and its point of coaptation to the LCMN was 54mm. All ICBNs had enough extension to reach the LCMN. Conclusion Transfer of the ICBN to the LCMN is anatomically feasible and may be useful for restoring sensation in patients with complete brachial plexus injuries.

          Translated abstract

          RESUMO Objetivo Poucos doadores estão disponíveis para a restauração da sensibilidade em pacientes com lesões completas do plexo braquial (LCPB). O objetivo deste estudo foi avaliar a viabilidade anatômica do uso do nervo intercostobraquial (NICB) como doador de axônios para a contribuição do cordão lateral para o nervo mediano (CLNM). Métodos Trinta cadáveres foram dissecados. Os dados do NICB e do CLNM foram coletados: diâmetros, ramos e distâncias. Resultados Os diâmetros do NICB e da CLNM no ponto de coaptação foram 2,7mm e 3,7mm, respectivamente. O NICB originou-se como um único tronco em 93,3% dos espécimes e bifurcou-se em 73,3%. A distância entre a origem do NICB e seu ponto de coaptação com a CLNM foi de 54mm. Todos os NICBs tiveram extensão suficiente para alcançar a CLNM. Conclusão A transferência do NICB para a CLNM é anatomicamente viável e pode ser útil para restaurar a sensibilidade em pacientes com LCPB.

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          Neurotization in brachial plexus injuries. Indication and results.

          In neurotization or nerve transfer, a healthy but less valuable nerve or its proximal stump is transferred in order to reinnervate a more important sensory or motor territory that has lost its innervation through irreparable damage to its nerve. In brachial plexus injuries, extraplexal nerves such as the spinal accessory nerve, rami of the cervical plexus, or intercostal nerves are transferred onto trunks, cords, or individual nerves or else segments of the brachial plexus that maintain continuity with the spinal cord may be coapted to trunks or cords the surgeon wishes to innervate. This method is particularly indicated in root avulsion injuries that occur frequently following traction trauma to the brachial plexus. The authors convey their experience with neurotization using the long thoracic nerve in seven cases, the accessory nerve in 30 cases, intercostal nerves in 66 cases, and various nerve transfers within the plexus in 31 cases. Results of other authors are also reported. With these methods, it is possible to obtain good elbow flexion in more than one-half of patients; however, only limited shoulder function and no useful finger function are obtained.
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            The gross anatomy of the extrathoracic course of the intercostobrachial nerve.

            Recent reports emphasize the importance of preserving the intercostobrachial nerve (ICBN) during surgical procedures (i.e., mastectomy, axillary clearance). However, a limited number of scientific reports explore the surgical anatomy of this nerve. We dissected 100 adult human formalin-fixed cadavers (200 axillae). In all the cadavers the ICBN was present with variant contributions from intercostal nerves T1, T2, T3, and T4. The arrangements of the ICBN were typed as I through VIII. The components of Type I (45% or 90 of our specimens) included a branch to the posterior antebrachial cutaneous nerve, a branch to the anterior and lateral parts of the axilla, a branch to the medial side of the arm, and a branch to the medial antebrachial cutaneous nerve. Type II (25%) describes the ICBN arising from T2 and giving off a branch to the brachial plexus. In Type III (10%), lateral cutaneous branches of T2 and T3 fuse as a common trunk and then split immediately after exiting the intercostal space to form an ICBN. In type IV (5%), T2 and T3 join distally to form an ICBN that ends as its terminal branches. Type V (5%): T3 joins T2 from the same intercostal space proximally, with Type VI (3%) showing a very proximal branching of the sensory terminal nerves. Type VII (5%) displayed a contribution from T3 and a branch to the brachial plexus with multiple terminating branches. A contribution from T3 and T4 and a branch to the brachial plexus with multiple branches of termination comprised Type VIII (2%).
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              Intercostobrachial nerve handling and pain after axillary lymph node dissection for breast cancer.

              Moderate to severe pain in the first week after axillary lymph node dissection (ALND) for breast cancer is experienced by approximately 50% of the patients. Damage to the intercostobrachial nerve (ICBN) has been proposed as a risk factor for the development of persistent pain following breast cancer surgery but with limited information on acute post-operative pain. The aim of the present study was to examine the influence of ICBN handling on pain during the first week after ALND.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                anp
                Arquivos de Neuro-Psiquiatria
                Arq. Neuro-Psiquiatr.
                Academia Brasileira de Neurologia - ABNEURO (São Paulo, SP, Brazil )
                0004-282X
                1678-4227
                July 2017
                : 75
                : 7
                : 439-445
                Affiliations
                [2] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade de Medicina Brazil
                [1] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade de Medicina orgdiv2Hospital das Clínicas Brazil
                Article
                S0004-282X2017000700439
                10.1590/0004-282x20170073
                28746430
                f1d8e5bc-49c8-49cd-87ee-d6787128b7fd

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 15 February 2017
                : 03 February 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 7
                Product

                SciELO Brazil


                nervos intercostais,sensação,brachial plexus,nervo mediano,transferência de nervo,median nerve,intercostal nerves,sensation,nerve transfer,plexo braquial

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