%0 Journal Article
%T A Comprehensive Study of the Extensor Tendons to the Medial Four Digits of the Hand
%A Prameela Dass
%A Latha V. Prabhu
%A Mangala M. Pai
%A Varsha Nayak
%J Chang Gung Medical Journal
%D 2011
%I 
%X Background: Awareness of the anatomy and variations of the extensor tendons on the dorsum of the hand is necessary when assessing the traumatized or diseasedhand and when considering tendons for repair or transfer. A complete quantitative documentation of the extensor tendons is lacking.Method: The arrangements of extensor tendons to the medial four fingers namely, theextensor digitorum communis (EDC), extensor indicis proprius (EIP) andextensor digiti minimi (EDM) on the dorsum of the hand and the intertendinous connections between them were studied in 100 upper limb specimens.The findings were photographed, tabulated and analyzed statistically.Results: In 98% of the specimens, the EIP was a single tendon with a single insertion,whereas in two right upper limbs there were two EIP tendons with two insertions. In 77% of the specimens the EDC distally had tendons to the middlethree fingers (EDC index, EDC longus and EDC ring). The EDC small waspresent in only 34% of samples and the EDM showed normal anatomy inonly 20%. The most common types of juncturae tendinum in the 2nd, 3rdand4thintermetacarpal spaces were Type 1, 2 and 3r, respectively. Two accessorymuscles were seen. One was the extenson medii proprius in 5% of samplesand the other, the extensor digitorum brevis manus, was seen in 3%.Conclusion: Variations of the extensor tendons were common in this study, especially forthe middle and ring fingers which showed multiple tendons of the EDC.
%K extensor digitorum communis
%K extensor indicis
%K extensor digiti minimi
%K juncturae tendinum
%K extensor medii proprius
%K extensor digitorum brevis manus
%U http://memo.cgu.edu.tw/cgmj/3406/340607.pdf