Lumbricals play a significant role in the intrinsic movements of the hand. These muscles are unique in their position as they connect the flexors of the digits to the extensors, both the attachments being mobile. During, the routine dissection procedure being carried out for the 1st year MBBS students we found the first lumbrical to be hypertrophied in 1 out of the 30 upper limbs which were dissected. The hypertrophied first lumbrical may lead to the compression of radial collateral digital arteries leading to chronic sub ischaemia of fingers. The clinical significance of variation is discussed.
Key words: Lumbricals, Hypertrophy, Chronic sub ischaemia
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