[Location] Localized in the supine position or in the sitting position with the sole was put flatly. On the dorsum of the foot, proximal to the web margin between the second and third toes, at the junction of the red and white skin. (Fig.48)
 
[Regional Anatomy] Skin→subcutaneous tissue→between the tendons of the extensor digitorum longus and the extensor digitorum brevis of the second and third toes→between the heads of the second and third metatarsal bones. Superficial layer, the distribution of the dorsal digital nerve derived from the medial dorsal cutaneous nerve of foot. and the dorsal venous network of foot; deep layer, the dorsal digital artery and vein of foot.