[Location] Localized in the erect sitting positron or in the supinate position, with the palm upwards, on the ulnaris of the little finger, the head of transverse striation of the proximate articulationes digitorum manus. (Fig.105)
 
[Regional Anatomy] Skin→subcutaneous tissue→deep flexor muscle of fingers' tendon. The distribution of the branches or the subordiantial ramus of little finger's proper palmar digital arteries and veins, digiti manus subcutaneous vein, and proper palmar digital nerves of ulnar nerve.