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观测３０例拇指在三个断面主要结构，结果：①拇指桡侧固有动脉在三个断面上４、５区的出现率，男性为１００％、１００％和９８％，女性为９３．４％、９３．３％和１００％。外径均值１ｍｍ±。拇指尺侧固有动脉在三个断而上８、９区的出现率男性为８５．７％、９２．８％和１００％，女性为９３．４％、９３．３％和１００％。外径均值为０．９～１．５ｍｍ。②拇指桡侧固有神经在各断面５区内的出现率多在７０％以上。尺侧固有神经在各断面７、８区内的出现率均大于９２％，外径均值为１．４～２．０ｍｍ。③拇指三个断面上的１、２、１１、１２和其它某些区，静脉的出现率都在７０％以上，外径均值０．８ｍｍ±。
The main structures of three thumbs in 30 cases were observed. Results: ①The incidence of native arteries on the radial side of the thumb in sections 4 and 5 was 100%, 100% and 98% for men and 93.4% for women, respectively. 93.3% and 100%. The average diameter of 1mm ±. The incidence of the native arteries on the thumb ulnar was 85.7%, 92.8% and 100% for men and 93.4%, 93.3% and 100% for men in the 8th and 9th districts, respectively. The average diameter of 0.9 ~ 1.5mm. ② The radial nerve of the thumb in each section of the 5 area more than 70% incidence. Ulnar nerve in each section of the 7,8 area incidence were greater than 92%, the average diameter of 1.4 ~ 2.0mm. ③ thumb on the three sections of 1,2,11,12 and some other areas, the incidence of veins in more than 70%, the average diameter of 0.8mm ±.