Abstract：
OBJECTIVE: To develop phonosurgery skills, surgical training of the actual larynx is essential. In our institution, the Japanese deer (Cervus Nippon aplodontids) larynx is used in phonosurgery training. This study aimed to examine the similarities and differences between the Japanese deer and human larynx and to demonstrate their utility in vocal surgery practice.
METHODS: A comparative study was conducted using 30 Japanese deer larynges and 51 human donor larynges, evaluating the overall framework, dimensions, and angle of the thyroid cartilage, vocal cord length, and location of the arytenoid cartilage muscular process. The changes and movements of the vocal folds during contraction and relaxation of each internal laryngeal muscle were also visually analyzed.
RESULTS: The larynx size of Japanese deer is intermediate between that of human males and females. The adduction and abduction of the vocal folds induced by contraction of the posterior and lateral cricoarytenoid muscles, as well as the extension of the vocal folds induced by contraction of the cricothyroid muscle, behaved in the same manner as in the human larynx.
CONCLUSIONS: The morphology of the Japanese deer larynx is similar to that of the human larynx, making it suitable for use in dissection and surgical practice. Owing to the recent animal damage problem and the popularity of gibier cuisine, large quantities of Japanese deer larynx are available at low prices. We believe that the Japanese deer larynx is the most appropriate animal for phonosurgery training so far.
METHODS: A comparative study was conducted using 30 Japanese deer larynges and 51 human donor larynges, evaluating the overall framework, dimensions, and angle of the thyroid cartilage, vocal cord length, and location of the arytenoid cartilage muscular process. The changes and movements of the vocal folds during contraction and relaxation of each internal laryngeal muscle were also visually analyzed.
RESULTS: The larynx size of Japanese deer is intermediate between that of human males and females. The adduction and abduction of the vocal folds induced by contraction of the posterior and lateral cricoarytenoid muscles, as well as the extension of the vocal folds induced by contraction of the cricothyroid muscle, behaved in the same manner as in the human larynx.
CONCLUSIONS: The morphology of the Japanese deer larynx is similar to that of the human larynx, making it suitable for use in dissection and surgical practice. Owing to the recent animal damage problem and the popularity of gibier cuisine, large quantities of Japanese deer larynx are available at low prices. We believe that the Japanese deer larynx is the most appropriate animal for phonosurgery training so far.
摘要：
目标：为了发展语音外科技能，实际喉部的手术训练是必不可少的。在我们的机构里,日本鹿（CervusNipponaplodontids）喉用于语音外科训练。这项研究旨在研究日本鹿和人类喉之间的异同，并证明它们在声乐手术实践中的实用性。
方法：使用30只日本鹿喉和51只人类供体喉进行了一项比较研究，评估总体框架，尺寸,和甲状软骨的角度，声带长度，关节软骨肌肉过程的位置。还直观地分析了每个喉内肌收缩和松弛过程中声带的变化和运动。
结果：日本鹿的喉大小介于人类雄性和雌性之间。后环节肌和外侧环节肌收缩引起的声带内收和外展，以及由环甲肌收缩引起的声带延伸，在人类喉中的行为方式相同。
结论：日本鹿喉的形态与人类喉相似，使其适用于解剖和外科手术。由于最近的动物损害问题和gibier美食的流行，大量的日本鹿喉可以低价购买。我们认为，日本鹿喉是迄今为止最适合进行语音外科训练的动物。
方法：使用30只日本鹿喉和51只人类供体喉进行了一项比较研究，评估总体框架，尺寸,和甲状软骨的角度，声带长度，关节软骨肌肉过程的位置。还直观地分析了每个喉内肌收缩和松弛过程中声带的变化和运动。
结果：日本鹿的喉大小介于人类雄性和雌性之间。后环节肌和外侧环节肌收缩引起的声带内收和外展，以及由环甲肌收缩引起的声带延伸，在人类喉中的行为方式相同。
结论：日本鹿喉的形态与人类喉相似，使其适用于解剖和外科手术。由于最近的动物损害问题和gibier美食的流行，大量的日本鹿喉可以低价购买。我们认为，日本鹿喉是迄今为止最适合进行语音外科训练的动物。
