期刊名称：International Journal of Anatomy and Research
印刷版ISSN：2321-4287
出版年度：2017
卷号：5
期号：4
页码：4504-4509
DOI：10.16965/ijar.2017.385
出版社：International Journals of Medical and Health Research
摘要：Study of extensor tendons in forearm, dorsum of hand and their intertendinous connections was conducted in 70upper limbs (35 right and 35 left) from Govt. Thoothukudi Medical College, Tamilnadu, India. Variations in theextensor tendons of fingers, both proximal and distal to the extensor retinaculum were analyzed. The arrangementof extensor pollicis longus and brevis tendons were traced up to base of proximal phalanx and extensor expansionat the level of proximal as well as base of phalanx, they were found to be single or doubled. Extensor indicis weresingle tendon in most of the specimens. The extensor digitorum gave off single tendon to the index finger, doubletendons to the middle finger and triple tendons to the ring finger. The extensor digiti minimi often had single ordouble tendon to the little finger distal to extensor retinaculum, in those cases contribution from the extensordigitorum tendon slip to the little finger were absent. Three types of juncturae tendinum were identified betweenthe tendons of extensor digitorum in the 2nd, 3rd, 4th inter metacarpal spaces of hands. The extensor indicistendon was always observed to lack juncturae tendinum. Type I juncturae tendinum was seen in the 1st intermetacarpal space. Type II was seen in the 3rd intermetacarpal space. Type III was identified in the 4thintermetacarpal space. Knowledge of these variations may help surgeons while performing tendon repair ortransfer. Surgeons should keep in mind about the existence of these variations for better diagnosis andreconstructive procedures.
