人胫骨前肌神经入肌点定位与肌内神经分布

Anatomical localization of extramuscular nerves entry points and intramuscular nerves distribution patterns in the human tibialis anterior

目的探索胫骨前肌神经入肌点定位与肌内神经分布。方法用成人尸体(20～50岁)20具和童尸(2～10岁)5具,分别采用大体解剖法和改良Sihler’s肌内神经染色法观察胫骨前肌神经入肌点定位与肌内神经分布。结果胫骨前肌是一环羽肌。肌外神经支配多为3支型(77.5%)。神经支入肌点距腓骨头2.10～9.40 cm。肌内神经分布:神经入肌后3条初级支分别司肌前上部、前下部和后下部的纤维,各支间未见吻合。结论胫骨前肌可分出三个神经肌亚部。

Objective To determine the anatomical localization of extramuscular nerves entry point and intramuscular nerves distribution patterns in the tibialis anterior.Methodsin 20adult cadavers（20~50a）and the chid＇s bodg（2~10a）5 The gross anotomy and modified Sihler＇s staining were performed to investigate the extramuscular nerves entry points and intramuscular nerves distribution patterns,respectively.Results The tibialis anterior was a circum-pennate muscle innervated by three main extramuscular branches（77.5%）.The distance from the fibular head to the nerve entry point was about 2.10-9.40 cm.Upon the main branches in the muscle,the branches innervated the anterior,posteroinferior and posterosuperior muscle,respectively.There were no anastomoses observed among the main branches.Conclusions The tibialis anterior could be divided into three neuro-compartments.