胎儿和幼儿跖趾骨血液供应的观察  

OBSERVATION OF BLOOD SUPPLY OF METATARSUSES AND PHALANGEALS IN FETUSES AND INFANTS

作　　者：陈志刚[1] 郭琪[2] 马钦华 鱼波浪 王争鸣 钱致中[1] 

机构地区：[1]西安医科大学第一附属医院放射学教研室,西安710061 [2]陕西省人民医院放射科 [3]河南省新乡医学院附属医院放射科

出　　处：《西安医科大学学报》1993年第3期210-214,T002,共6页Journal of Xi'an Medical University(Chinese)

摘　　要：采用微血管造影等方法,观察30例胎、幼儿跖趾骨的血供。结果表明:胎儿期跖趾骨骨干和两端软骨逐渐增大,出现滋养动脉和软骨管,幼儿期两端软骨逐渐变小,软骨管也逐渐消失。提示软骨管的出现与软骨块的大小有关,软骨管是胎儿软骨内的临时血管系统。跖趾骨血供特点:①跖趾骨血供的不均称性分布,即骺端软骨血供丰富,这与两端生长能力不同相适应;②远趾只骺端有软骨管分布,这与只骺端有生长能力相适应,说明跖趾骨血供与其生长发育有密切关系。The blood supply of metatarsuses and pha-langeals in 30 cases of fetuses and infants was ob-served by microangiographic methods. The resultsdemonstrated that diaphyses and cartilages of bothends of metatarsuses and phalangeals gradually in-creased in the fetal period and appeared nourishingartery and cartilage canal. Both ends of metatar-suses and phalangeals gradually decrea.ed in the. infant period and cartilage canals gradually disap-peared also. These implied that the appearance ofcartilage canals was related to the size of cartilageblocks. Cartilage Canals were temporary bloodsystem of fetal cartilage. Characteristics of bloodsupply of metatarsuses and phalangeals: 1. Asym-metrical distribution of blood supply on metatar-suses and phalangeal, that is the blood supply ofepiphyseal end is richer than one of non--epiphy-seal end, is adapted with the difference of growthability at both ends. 2. There is distribution ofcartilage canals at the epiphyseal end of the distalphalanx, and it is adapted with having growth a-bility at the proximal end. These show that bloodsupply of metatarsuses and phalangeals is closelyrelated to their growth and development.

关 键 词：骨 趾骨 胎儿 婴儿 血液供应 

分 类 号：R322.71[医药卫生—人体解剖和组织胚胎学]