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The palmar aponeurosis and the palmaris longus tendon were examined in 33 hands of
gestational age from 5 weeks to term. At 5 weeks both the longitudinal and transverse
layers of the palmar aponeurosis and the palmaris longus tendon were present and in
continuity. The palmaris longus tendon was absent in five specimens and in these the
longitudinal fibers of the palmar aponeurosis blended into the antebrachial fascia.
Otherwise the structure of the palmar aponeurosis was similar in the presence or absence
of the palmaris longus tendon. The staining characteristics of the palmaris longus
tendon were those of tendon whereas the palmar aponeurosis stained like fascia. These
observations, as well as the fact that the palmar aponeurosis has never been reported
to be absent, support the view of Kaplan that the palmar aponeurosis and the palmaris
longus tendon are separate anatomic structures, which develop independently and are
associated only by anatomic proximity.
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Article info
Publication history
Accepted:
November 23,
1987
Received:
August 4,
1987
Footnotes
*Supported by a research grant from the American Society for Surgery of the Hand.
**No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.
Identification
Copyright
© 1988 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
