A Morphological Study of Juncturae Tendinae of Hand in Adults and Fetuses
Authors/Creators
- 1. epartment of Anatomy, Amrita Institute of Medical Sciences, Elamakara P.O. Cochin-682026,
- 2. Department of Anatomy, awaharlal Institute of Postgraduate Medical Education & Research, Pondicherry-605006
- 3. Department of Anatomy, Annapoorna Medical College, Salem-636308
Description
On the dorsum of the hand, proximal to the metacarpo-phalangeal joints, interconnecting bands called ‘juncturae
tendinae’ extend between the tendons of extensor digitorum longus. These juncturae tendinae are clinically important
since the finger extension can be preserved when the extensor digitorum longus is lacerated proximal to the juncturae
tendinae connecting that finger to an intact extensor tendon. Varying morphologies of juncturae tendinae have been
described in the literature. The knowledge of morphology of juncturae tendinum is important as it has functional and
surgical importance. This study was undertaken to observe the morphology of juncturae tendinae in adult cadavers and
still born fetuses of South Indian origin. A total of 50 forearms and dorsum of the hands were dissected. This included 30
adult cadaveric hands and 20 still born fetal hands of either sex. The following features of juncturae tendinae were noted:
their gross morphology, size, shape and location. Juncturae tendinae were absent in the 1st intermetacarpal space of all the
dissected hands. Type 1 juncturae tendinae was present in 68 % of the second intermetacarpal space and in 48% of the
third intermetacarpal space. In the 4th intermetacarpal space most of the juncturae tendinae were of ‘3r’ type rather than ‘3y’
type; these types of juncturae tendinae were absent in the second intermetacarpal space as described in the literature. The
present anatomical data may help the hand surgeons to modify their surgical procedure for better outcome
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Additional details
References
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