本研究详细解剖了二十侧人体的腓肠肌外侧头。基于肌神经第一级分支的分布、肌纤维排列、和起止点的互异,将腓肠肌外侧头分为三个肌亚部(亚体),即内侧亚部(肌质部)、外侧浅亚部和外侧深亚部。腓肠肌外侧头的神经在肌内的分支有两型:1型分为四支,2型分为五支。二十侧解剖中以1型较多见(占70%)。作者认为,就人肌尸检材料作亚部化的研究在方法学上有待进一步探讨。但是,按亚部化原则取材以研究各亚部内肌纤维型的构成比可能更具有参考价值。 This study details the twentieth side of the body’s lateral gastrocnemius head. Based on the distribution of the first level branches of the muscular nerve, the arrangement of the muscle fibers, and the difference between the starting and ending points, the lateral head of the gastrocnemius muscle is divided into three muscular subdivisions (the subdivisions) And lateral deep sub. There are two types of nerves in the lateral head of the gastrocnemius muscle in the muscle: type 1 is divided into four, type 2 is divided into five. Twenty side anatomical type 1 more common (accounting for 70%). The author believes that the study on the submucousization of human muscle autopsy material needs to be further explored in methodology. However, according to the principle of sub-culture drawn to study the constituent ratio of muscle fibers in various sub-regions may be more of a reference value.