Anatomy and Cell Biology

Korean Association of Anatomists (대한해부학회)
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Reappraisal of arterial anatomy of thumb

  • Received : 2022.03.08
  • Accepted : 2022.07.12
  • Published : 2022.12.31
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Abstract

The nomenclature of arteries supplying the thumb and its sources arteries differs between the studies. This makes difficulty in understanding the irrigation pattern to the thumb. The main purpose of this study was to identify the proper digital arteries supplying the thumb on its radial and ulnar side from both the palmar and dorsal aspect. Also this study aimed to trace its source and classify with proper definition with the review of blood supply to thumb. Dissection was carried out in 55 hands form 28 freshly embalmed adult human cadavers of both genders. The proper digital arteries to the thumb and its source arteries were carefully traced and defined. Thumb receives its dominant blood supply mostly from its palmar side. The ulnar palmar digital artery was seen in all the dissected hand (100.0%) whereas; the radial palmar digital artery was present in 53 hands (96.4%). The radial dorsal digital artery and ulnar dorsal digital artery were observed in only 10.0% and 7.3%. The most common source of both the palmar digital arteries to thumb was from first palmar metacarpal artery (FPMA). In majority of the hands, in addition to the radial or ulnar palmar digital arteries from the FPMA, there were also additional palmar digital arteries arising from the superficial palmar arterial system. The universal naming of the proper digital arteries to the thumb as well as its source arteries is mandatory for the proper understanding of normal as well as variant arterial anatomy of thumb.

Keywords

Acknowledgement

We sincerely thank the relatives of the cadavers who have donated the bodies for the research purpose.

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