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Texto completo SciELO Chile
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Id: biblio-1098284
Autor: San-Martín, N; Sousa-Rodrigues, C. F; Olave, E.
Título: Biometría del músculo grácil: pedículos vasculares e inervación en un grupo de individuos brasileños / Biometric characteristics of the gracilis muscle: vascular pedicles and innervation in a group of Brazilian individuals
Fonte: Int. j. morphol;38(3):536-544, June 2020. tab, graf.
Idioma: es.
Resumo: El músculo grácil (MG) está ubicado en la cara medial del muslo, medial y posterior al aductor largo en su parte proximal. Se origina a nivel del pubis y se inserta en la cara medial de la tibia, en su parte superior. Como colgajo libre funcional ha sido uno de los injertos más utilizados en reconstrucciones diversas, tales como pene, perineo, vagina, pierna, plexo braquial, parálisis facial, lesiones rectales, entre otras. Basado en lo anterior, el objetivo de este estudio fue complementar la anatomía del MG tanto en sus dimensiones como en sus pedículos vasculares e inervación, estableciendo las relaciones biométricas existentes, contribuyendo a la anatomía quirúrgica, en su uso como injerto. Para ello, se utilizaron 30 miembros inferiores de 20 cadáveres de individuos adultos, brasileños, de sexo masculino, 14 derechos y 16 izquierdos; 17 fijados en formol y 13 en glicerina. Se dividió al muslo en 4 cuartiles enumerados de proximal a distal como C1,C2,C3 y C4. Se contabilizó el número de pedículos y se nombraron como pedículo principal (PP), pedículo menor 1 (Pm1), pedículo menor 2 (Pm2) y pedículo menor 3 (Pm3). La longitud media del GM fue de 42,25 cm ± 2,35 cm y su ancho promedio de 32,90 ± 4,86 mm. Con respecto a los pedículos vasculares se encontró un pedículo en 10/30 casos (33,3 %); un pedículo principal y uno menor en 10/30 (33,3 %); un pedículo principal y dos menores en 8/30 (26,7 %) y un pedículo principal y tres menores en 2/30 (6,7 %). Su inervación siempre procedió del ramo anterior del nervio obturador (RaNO). El punto motor se encontró a una distancia promedio de 7,94 mm proximal al ingreso del pedículo principal en el MG. Los registros biométricos están expresados en tablas. Los resultados obtenidos aportarán al conocimiento anatómico, pudiendo ser utilizados como soporte morfológico a los procedimientos quirúrgicos que involucren al músculo grácil.

The gracilis muscle (GM) is located in the medial aspect of the thigh, medial and posterior to the long adductor in its proximal part. It originates at the pubic level and is inserted in the medial face of the tibia, in its upper part. As a functional free flap, it has been one of the most co mmonly used grafts in various reconstructions, such as penis, perineum, vagina, leg, brachial plexus, facial paralysis, rectal lesions, among others. Based on the above, the objective of this study was to complement the anatomy of the GM both in its dimensions and in its vascular pedicles and innervation, establishing the existing biometric relationships, contributing to the surgical anatomy, in its use as a graft. For this, 30 lower limbs of 20 bodies of adult, Brazilian, male, 14 right and 16 left individuals were used; 17 fixed in formaldehyde and 13 in glycerin. The thigh was divided into 4 quartiles listed from proximal to distal such as C1, C2, C3 and C4. The number of pedicles was counted and they were named as principal pedicle (PP), minor pedicle 1 (mP1), minor pedicle 2 (mP2) and minor pedicle 3 (mP3). The average length of the GM was 42.25 cm ± 2.35 cm and its average width was 32.90 ± 4.86 mm. With respect to vascular pedicles, a pedicle was found in 10/30 cases (33.3 %); one PP and one mP in 10/30 (33.3 %); one PP and two mP in 8/30 (26.7 %) and one PP and three mP in 2/30 (6.7 %). Its innervation always came from the anterior branch of the obturator nerve (aBON). The motor point was found at an average distance of 7.94 mm proximal to the entry of the PP in the GM. Biometric records are expressed in tables. The results obtained will contribute to anatomical knowledge, and can be used as morphological support for surgical procedures that involve the GM.
Descritores: Músculo Grácil/inervação
Músculo Grácil/irrigação sanguínea
-Brasil
Cadáver
Músculo Grácil/anatomia & histologia
Limites: Humanos
Masculino
Adulto
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Brasil
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Id: lil-781427
Autor: Yang, Yi; Zou, Xue-jun; Fu, Guo; Qin, Ben-Gang; Yang, Jian-Tao; Li, Xiang-Ming; Hou, Yi; Qi, Jian; Li, Ping; Liu, Xiao-Lin; Gu, Li-Qiang.
Título: Neurotization of free gracilis transfer with the brachialis branch of the musculocutaneous nerve to restore finger and thumb flexion in lower trunk brachial plexus injury: an anatomical study and case report
Fonte: Clinics;71(4):193-198, Apr. 2016. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation; . National Key Clinical Specialist Construction Programs of China.
Resumo: OBJECTIVE: To investigate the feasibility of using free gracilis muscle transfer along with the brachialis muscle branch of the musculocutaneous nerve to restore finger and thumb flexion in lower trunk brachial plexus injury according to an anatomical study and a case report. METHODS: Thirty formalin-fixed upper extremities from 15 adult cadavers were used in this study. The distance from the point at which the brachialis muscle branch of the musculocutaneous nerve originates to the midpoint of the humeral condylar was measured, as well as the length, diameter, course and branch type of the brachialis muscle branch of the musculocutaneous nerve. An 18-year-old male who sustained an injury to the left brachial plexus underwent free gracilis transfer using the brachialis muscle branch of the musculocutaneous nerve as the donor nerve to restore finger and thumb flexion. Elbow flexion power and hand grip strength were recorded according to British Medical Research Council standards. Postoperative measures of the total active motion of the fingers were obtained monthly. RESULTS: The mean length and diameter of the brachialis muscle branch of the musculocutaneous nerve were 52.66±6.45 and 1.39±0.09 mm, respectively, and three branching types were observed. For the patient, the first gracilis contraction occurred during the 4th month. A noticeable improvement was observed in digit flexion one year later; the muscle power was M4, and the total active motion of the fingers was 209°. CONCLUSIONS: Repairing injury to the lower trunk of the brachial plexus by transferring the brachialis muscle branch of the musculocutaneous nerve to the anterior branch of the obturator nerve using a tension-free direct suture is technically feasible, and the clinical outcome was satisfactory in a single surgical patient.
Descritores: Transferência Tendinosa/métodos
Plexo Braquial/lesões
Neuropatias do Plexo Braquial/cirurgia
Dedos/fisiologia
Músculo Grácil/cirurgia
Músculo Grácil/inervação
Nervo Musculocutâneo/transplante
-Polegar/fisiologia
Cadáver
Estudos de Viabilidade
Transferência de Nervo/métodos
Amplitude de Movimento Articular/fisiologia
Força da Mão/fisiologia
Neuropatias do Plexo Braquial/fisiopatologia
Limites: Humanos
Masculino
Adolescente
Responsável: BR1.1 - BIREME



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