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An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis

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Author(s)
Jongwan KimJae-Ho Lee
Publication Year
2020
Keyword
Anatomical variationsAccessory muscleExtensor carpi radialis brevisExtensor digitorum
Abstract
The anomalous variations in the extensor carpi radialis brevis (ECRB) and extensor digitorum (ED) muscles of the forearm have been previously reported in the literature. The present article reported an anomalous variation of the ECRB and ED muscles in the forearm. We found an accessory muscle originated from the medial side of the ECRB muscle and inserted into the base of second metacarpal bone. And the ED muscle divides into three distinct tendons without the tendon of index finger. This case is a first report of the variations of ECRB and ED muscle in Korean cadaver. Knowledge of this variation is important to avoid surgical complications and to prevent diagnostic problems. Its embryological and clinical significances were discussed.
Alternative Title
An Extensor Digitorum Muscle for Index Finger Originated from the Extensor Carpi Radialis Brevis
Department
Dept. of Anatomy (해부학)
Publisher
School of Medicine (의과대학)
Citation
해부·생물인류학, Vol.33(1) : 31-34, 2020
Type
Article
ISSN
2671-566X
DOI
10.11637/aba.2020.33.1.31
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/42708
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