国人女性乳房内侧部的动脉

本文观察了50例女性乳房内侧部的动脉,标本血管内注入有色乳胶液,在肉眼及手术显微镜下解剖观察。胸廓内动脉的Ⅰ、Ⅱ、Ⅲ穿支为动脉主要来源。动脉分5型,2支型最多(54%)。分布到乳腺的穿支为肌皮腺型血管,其基本形具有4个方向的分支:主支向乳头;另1支向腋下;第3支向胸骨;第4支向锁骨。血管径以第Ⅱ穿支最大(0.92 mm),其次是第Ⅰ和第Ⅲ穿支。分布面积以第Ⅱ穿支最广(6,265.50 mm~2),其次是第Ⅲ和第Ⅰ穿支。第Ⅰ穿支跨4肋者占52%;第Ⅱ穿支跨4肋者占43%;以下各支逐渐减少。乳房内侧部的动脉与乳房外侧部的动脉分支吻合数最多(48%)。

OBSERVATION OF THE BLOOD SUPPLY OF THE MEDIAL PORTION OF THE BREASTS IN THE CHINESE FEMALE

The arteries of the breasts of 25 Chinese female cadavers, injected with color latex, were dissected and observed by surgical microscope. These arteries originate from the first, second and third perforating branches of the internal thoracic artery. They were classified into five types. The two branch type occured most frequently (54%), and is musculoadenocutaneous in nature. The distribution of this type of artery is in four directions, one branch to the nipple, the second branch to the axilla, the third branch to the sternum and the last branch to the clavicle. The second perforating branch is the largest in diameter, 0.92 mm., the first and third perforating branches come next. The area of distribution of the second perforating branch is also the largest, 6265.50 mm2, and the third and first perforating branches come next. The first perforating branch crosses the 4 th rib in 52%, and that of the second perforating branch in 43%. The arteries supplying the medial portion of the breast have an extensive anastomoses (48%) with those arteries of the lateral portion.