Abstract
The superficial palmar branch (SPB) of the radial artery (RA) is an important blood vessel in plastic surgery procedures of the hand. It is used as the axial artery in a free flap used for finger reconstruction. The occurrence of this arterial branch is variable, as well as its diameter and course. The aim of this study was to determine the occurrence and measure the external diameter of the SPB, as well as the external circumference of the RA. All results were analyzed with the intent to determine a possible correlation between RA and SPB size, as well as between SPB occurrence and the cadavers’ sex and height. The study was conducted on both upper extremities of 60 cadavers (31 male and 29 female), of 35–55 years of age (average age was 46.5 years). A radial artery sample was taken at the level of the wrist, together with its superficial palmar branch. The samples were preserved in 4% formaldehyde for four weeks. After the fixation, the external circumference of the radial artery and the external diameter of the superficial palmar branch were measured with a Vernier caliper and an operating microscope. Bilateral SPB absence was the most common variant of SPB occurrence in our material. There was no linear correlation between the size of the RA and the SPB, nor was there any relationship between SPB occurrence and the cadavers’ age and height. Also, the correlation between the cadavers’ height and the size of both blood vessels was not linear. We conclude that the SPB diameter and occurrence are independent of the other factors described in this study.
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