4Matloub H S, Strathy K M, Sanger J R,et al. Venous anatomy of the thumb[J].Hand Surg, 1991,16(6) : 1063--1069.
5Grossman J A, Yen L, Papaport D. The dorsal cutaneous branch of the ulnar nerve: An anatomic clarification with six case reports [ J ]. Chir Main, 1998, 17(2) : 154-- 158.