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NJBMS - Volume 1, Issue 4, April - June 2011

Pages: 232-233

EXTENSOR INDICIS BREVIS REPLACING EXTENSOR INDICIS - CASE REPORT

Author: TELI CHANDRIKA G , USHA KOTHANDARAMAN

Category: Anatomy

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Abstract:

Variant muscles are often a matter of concern to clinicians as they mislead the diagnosis. In this report we present a variant muscle on dorsum of hand, extensor indicis brevis which replaced extensor indicis proper. It originated from area of fourth compartment of extensor retinaculum, ligament over scaphoid and adjacent carpal bones. It was inserted into ulnar aspect of extensor expansion of index finger. This variant muscle often causes chronic dorsal wrist pain as in fourth compartment syndrome, or may be confused with synovial cyst, ganglion, and soft tissue tumor. The knowledge of presence of such variant muscle is essential for surgeons. We endeavor to discuss the relevance of embryogenesis with respect to the extensor muscles.

Keywords: Extensor indicis brevis, Extensor digitorumbrevis manus, Extensor indicis variation.

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Editor in Chief of NJBMS Dr.Deepti Shastri, Professor and Head, Department of Anatomy, Academic Co-ordinator for Pre and Paraclinical Sciences, VMKV Medical College & Hospital, Salem.


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