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The arteriovenous pattern of the distal digital segment
P Chaudakshetrin1, V P Kumar, K Satku
1University Department of Orthopaedic Surgery, Singapore General Hospital.
Journal of Hand Surgery (Edinburgh, Scotland)
|May 1, 1988
Summary
This study reveals a consistent digital artery arch in most fingers, with variations in artery size and numerous branches supplying the fingertip. Dorsal vein patterns were also consistently observed.
Area of Science:
- Anatomy
- Vascular Anatomy
- Hand Surgery
Background:
- Understanding the vascular anatomy of the digits is crucial for reconstructive surgery and trauma management.
- Previous studies have described digital artery variations, but a detailed analysis of the pulp arch and dorsal venous patterns is needed.
Purpose of the Study:
- To delineate the vascular architecture of the digital pulp, focusing on the digital artery arch and dorsal venous system.
- To identify consistent patterns and variations in the arterial supply and venous drainage of the terminal phalanx.
Main Methods:
- Injection of eosin dye and latex into 45 cadaveric finger specimens.
- Macroscopic examination to visualize and map the digital arteries and dorsal veins.
- Analysis of the digital pulp arch formation, arterial branching, and venous patterns.
Main Results:
- A distinct digital pulp arch, formed by the ulnar and radial digital arteries, was identified in 93% of digits over the mid-point of the terminal phalanx.
- Variations in the size of proper digital arteries were observed.
- Numerous arterial branches originated from the pulp arch, supplying the distal fingertip.
- A constant pattern of dorsal veins was noted over the terminal segment in 89% of digits.
Conclusions:
- The digital pulp arch represents a consistent feature of digital vascular anatomy, providing significant arterial supply to the fingertip.
- Awareness of these arterial and venous patterns is essential for surgical interventions involving the digits.