目的　了解足背内侧动脉网的血供基础，为足背内侧皮瓣的设计提供解剖学依据。  方法　解剖20侧经动脉灌注红色乳胶的成人足标本，观察足背内侧动脉网的血供来源、分支、分布及吻合情况。   结果　足背内侧动脉网的血供主要源于以下4个方面：（1）内踝前动脉的足背内侧皮穿支；（2）跗内侧动脉发向足背内侧的皮穿支；（3）足底内侧动脉浅支和足底内侧深支向足背内侧发出的皮穿支；（4）母趾胫侧底动脉沿母展肌上缘发出的皮穿支。  结论　根据足背内侧动脉网的解剖学特点，可设计足内侧皮神经营养血管皮瓣和足内侧筋膜蒂皮支链皮瓣2种类型的带蒂皮瓣。

Objective　To understand the blood supply foundation in the dorsal medial artery network of foot, and provide anatomical basis for the rational design of the dorsal medial flap of foot.　Methods　The origin, course, branch and anastomosis of the blood supply of the dorsal medial artery network of foot were observed by dissecting 20 adult cadaveric foot specimens perfused with red latex.　Results　There were four main sources of blood supply in the dorsal medial artery network of foot, including the cutaneous branches from medial anterior malleolus artery in the medial dorsal foot, the cutaneous branches from the medial tarsal artery in the medial dorsal foot, the cutaneous branches came from the superficial branches and deep branches of the medial plantar artery that were distributed in the medial aspect of the dorsum of foot, and the cutaneous branches from the great toe tibial arteries that were distributed on the edge of the abductor hallucis muscle.  Conclusion　According to the anatomical characteristics of the medial dorsal artery network, two types of pedicled flaps can be designed: medial cutaneous neurocutaneous vascular flap of foot and medial fasciocutaneous flap based on the cutaneous vascular chain.