Variant muscle on the dorsum of hand – case report

The awareness of the variant muscle present in the hand is of great interest to the hand surgeons while performing the hand surgeries and tendon transplants. This variant muscle may be misdiagnosed as a ganglion, a synovial nodule, cyst, etc. Out of the 24 cadavers allotted for the undergraduate medical students of the Malankara Orthodox Syrian Church Medical College, Kolenchery, we noted an extra muscle on the dorsum of the hand bilaterally. The variant muscle was inserted to the base of the proximal phalanx of the middle finger and it had a connection to the dorsal digital expansion of the same finger. This insertion is different from other reported cases, and is called extensor digiti medii minimi.