Arterial Variations in Man : Classification and Frequency

In textbooks on anatomy, radiology and stead of the normal one. An "accessory ar surgery only the "normal" arterial blood tery" is a second artery ip addition to the one normally present, without any specifi supply is usually described. This "nor mality," however, is sometimes found in cation of size being made. However, there less than 30% of all cases for some arteries, is no general agreement on whether minute but in over 95% for others. Rarely men vessels with very small diameters and hard tioned are deviations in the individual ar ly any significant blood flow should also be tery's origin, topographical localization and considered. the area it supplies. They can be classified The aims of this book were twofold: first, to into two groups: malformations and vari extract the frequency of arterial anomalies from the literature (often published in inac ations. Malformations often have a nega tive influence on the function of the organ cessible journals) and second, to classity under normal circumstances, e.g. if both these arteries by schematic outlines of the basic types."