Rare variants of obturatory artery

Abstract

Even more often at performance of morphological researches it is possible to meet a variant of structure of certain organ, having differences from the classical description in textbooks and grants. In such cases it is expedient to inform on it applied medicine, in order to avoid difficulties and complications during diagnostics and treatment. The vascular channel, likely, concerns to most variable system in human body. Presence of “a death crown” is one of “nonclassical” variants of the given vessels. The obturatory artery was a subject of special attention of anatomists and surgeons after publication in the middle of XIX century of cases of its wound at operations concerning the restrained femoral hernias. On literary data the frequency of occurrence “abnormal” a. obturatoria, departing from branches of external iliac artery, can fluctuate from 1,3% to 25% of cases. The origin of the obturatory artery from inferior epigastric meets in 2,6-14,8%. On our data, the obturatory artery is considered one of the most variable pelvic vessels (variability coefficient - 11,6%). In most cases (66%) the given vessel concerns to the system of internal iliac artery, however, its most frequent source (33%) is inferior epigastric artery originating from a. iliaca externa. We find out a number of origins of the a. obturatoria, earlier not described in the literature: 1) a comer between internal iliac and umbilical arteries (in newborns); 2) one trunk with the inferior gluteal artery; 3) one tmnk with a iliolumbal artery. Thus, results of our research have shown, that in spite of the fact that more often the obturatory artery originates from branches of the internal iliac artery; nevertheless the inferior epigastric artery is the most frequent source, of all possible. The given fact is necessary for considering, at carrying out of surgical manipulations in the region of a groin.