Arch Hand Microsurg 2019; 24(3): 203-209  
Experiment of Radial and Ulnar Sides Sensory Dominance of the Digits in Office Workers by Fluorescent Material Painting
Hong Il Kim
Department of Plastic Surgery, Kosin University College of Medicine, Busan, Korea
Correspondence to: Hong Il Kim
Department of Plastic Surgery, Kosin University College of Medicine, 262 Gamcheon-ro, Seo-gu, Busan 49267, Korea
TEL: +82-51-990-6131, FAX: +82-51-990-3005, E-mail:, ORCID:
Received: February 16, 2019; Revised: May 13, 2019; Accepted: May 29, 2019; Published online: September 1, 2019.
© Korean Society for Surgery of the Hand, Korean Society for Microsurgery, and Korean Society for Surgery of the Peripheral Nerve. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Purpose: The radial side of fingers are thought to be the dominant sensory side. With the development of electronic devices and lifestyle changes, we think this should be re-evaluated.
Methods: We painted fluorescent material on both hands of 26 office workers. Each finger was divided into the ulnar and radial compartment. We analysed how much fluorescent material remained by comparing two pictures, before and after work.
Results: On the dominant hand, significantly more fluorescent material remained on the radial side of the ring and little finger compared with the other compartment. On the non-dominant hand, there was no statistical difference between compartments.
Conclusion: In this study, the radial sides of the ring and little finger on the dominant hand seem to be less useful in modern life and these compartments can be sensibly less important. This observation can be used as a basic data for reevaluation of the sensory dominant sides of fingers and it may be helpful in various hand surgery.
Keywords: Fingers, Sensation, Tissue donors

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