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Scholars International Journal of Anatomy and Physiology (SIJAP)
Volume-1 | Issue-04 | 97-100
Original Research Article
A Study of Inter - Tendinous (Juncturae Tendinum) Connections between the Four Tendons of Extensor Digitorum Communis (EDC)
Dr. Shishirkumar, Dr. Shivarama CH
Published : Nov. 30, 2018
DOI : 10.36348/sijap
Abstract
Extensor digitorum communis arises from the lateral epicondyle of the humerus by the common extensor tendon, the adjacent intermuscular septa and the antebrachial fascia. It divides distally into four tendons, this tendons pass in a common synovial sheath with the tendon of extensor indicis, through a tunnel under the extensor retinaculum. The tendons run over the dorsum of the hand, one to each finger. The tendon to the index finger is accompanied by extensor indicis, which lies ulnar (medial) to it. On the dorsum of the hand, adjacent tendons are bonded by three variable intertendinous connections (juncturae tendinum), which are inclined distally and radially. The digital attachments enter a fibrous expansion on the dorsum of the proximal phalanges to which lumbrical, interosseous and digital extensor tendons all attached. This study puts in a sincere effort to study the intertendinous connections (juncturae tendinum) between the four tendons of Extensor digitorum communis. 80 upper limb specimens of human cadaver were used to study the type of intertendinous connections or juncturae tendinum (JT) between the four tendons of Extensor digitorum communis which are seen in 2nd, 3rd and 4thintermetacarpal spaces. The special findings are photographed; all the findings are tabulated and analyzed statistically. Statistically the differences between the right and left hand for the above mentioned tendons and juncturae tendinum were insignificant (p value >0.05). Type 1 JT is most common in 2nd IMS, Type 2 is common in 3rd IMS and Type 3r and Type 3y are found in 4th IMS.
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