Hontanilla Bernardo, Qiu Shan Shan
Department of Plastic and Reconstructive Surgery, Clínica Universidad de Navarra, Navarra, Spain.
J Craniofac Surg. 2012 Jan;23(1):203-5. doi: 10.1097/SCS.0b013e31824190a6.
The masseter muscle is one of the muscles involved in mastication. Transposition of this muscle has been used for dynamic reanimation of facial palsy since the early years of the 20th century. We present an anatomic study of the masseter muscle and its neurovascular bundle to determine the possibility of using hemimasseteric transposition of the muscle for the rehabilitation of facial paralysis.
Six white fresh cadavers were used to study the masseter nerve and the vascular supply to the masseteric muscle. Dissection was performed in each hemiface of each specimen. All the masseter nerve bundles were dissected to study their distribution. ANATOMIC STUDY: A constant anatomy was examined in all the specimens dissected. Dissection was performed inside the muscle body to expose the whole masseter nerve and its branches. A tree-like design of the nerve branches was observed. Each nerve branch was accompanied by its corresponding vascular pedicle, which guaranteed the vascular supply to the muscle divisions.
The knowledge of the anatomy of the masseter nerve and its vascular supply is the key to preventing nerve damage when the muscle is split for facial reanimation. The possibility of selecting the bundle included in the transposed section of the muscle could be used for dynamic reanimation of the paralyzed face.
咬肌是参与咀嚼的肌肉之一。自20世纪初以来，该肌肉的转位已被用于面神经麻痹的动态重建。我们对咬肌及其神经血管束进行解剖学研究，以确定使用咬肌半侧转位来恢复面瘫的可能性。
使用6具白色新鲜尸体研究咬肌神经和咬肌的血管供应。在每个标本的每侧面部进行解剖。解剖所有咬肌神经束以研究其分布。解剖学研究：在所有解剖的标本中检查恒定的解剖结构。在肌体内进行解剖以暴露整个咬肌神经及其分支。观察到神经分支呈树状分布。每个神经分支都伴有相应的血管蒂，这保证了肌肉各部分的血液供应。
了解咬肌神经及其血管供应的解剖结构是在将肌肉劈开用于面部重建时防止神经损伤的关键。选择包含在肌肉转位部分中的神经束的可能性可用于瘫痪面部的动态重建。
