The Axillary Artery in Japanese Adults (I)

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  • 日本人成人の腋窩動脈について(1)

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The authors examined the branching condition of each artery of A. axillaris in 50 bodies of the Japanese adults with 100 side cases and have reported here some interesting results. 1) The frequencies of the independent branches of six branches (A. thoracica suprema, A. thoracoacromialis, A. thoracica lateralis, A. subscapularis, A. circumflexa humeri anterior and A. circumflexa humeri posterior) which have been reported in NOMINA ANATOMICA are 86%, 69%, 45%, 45%, 64% and 25% respectively. As branching condition of whole A. axillaris, Type A-VI (all of 6 arteries are the independent branches) is up to 16% with the highest frequency. This is almost the same in frequency as the former reports. 2) The following four arteries have not been listed in NOMINA ANATOMICA. a) Ramus partis abdominalis (Rab, SATO, '76; runs with Nn. pectorales inferiores and is distributed at Pars abdominalis of M. pectoralis major). b) A. subscapularis superior (Sss, Huelke, '59; runs with N. subscapularis superior and is manly distributed at the upper part of M. subscapularis). c) A. coracobrachialis (Cb, SATO, '80; runs with N. musculocutaneus and is mainly distributed at M. coracobrachialis). d) A. processus coracoideris (Pc, SATO-TAKAFUJI, '85; comes from the 2nd part and is distributed around Processus coracoideus). As to the frequency, the incidences of the independent branches of 4 arteries (Rab, Sss, Cb and Pc) are 44%, 39%, 90% and 62% respectively, and they are missed in 14%, 0 %, 1 % and 32% respectively. Therefore, they can be considered as the arteries which exist in all the cases. 3) In 2 cases A. circumflexa humeri posterior has been observed with 2 branches, which have not been reported as yet. 4) In the variational case, A. branchialis superficialis exists up to 10% of all the cases (1 case of them has not been included in the classification by Adachi).

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