This report describes the case of a 10-month-old boy who presented with a duplicated
index finger enveloped by palmar skin on the palmar side of the first web of the left
hand. He was healthy without any other abnormalities except the hand anomaly. Surgical
resection of the extra finger was performed with triangular flap at 15 months of age.
The resected finger was composed of only palmar components: skin without nail or hair;
flexor tendons; and digital nerves branching from the median nerve. Histological examination
of the specimen demonstrated similar structures on both palmar and dorsal sides, that
is, ridged, hairless, and glabrous skin with a high number of epithelial layers and
thick corneous stratum and similar shaped tendons inserted into the symmetrical phalanx.
This appears to be the first report in literature of an ectopic palmar index finger,
a ventral polydactyly with ventral dimelia.
Key words
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Article info
Publication history
Published online: March 12, 2022
Accepted:
January 4,
2022
Received:
October 22,
2020
Footnotes
No benefits in any form have been received or will be received related directly or indirectly to the subject of this article.
Identification
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© 2023 by the American Society for Surgery of the Hand. All rights reserved.
