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Ulnar Motor Nerve - Recording the Abductor Digiti Minimi (ADM), stimulating at wrist

Last updated on Wednesday, October 7 2009 by jdmiles

Ulnar Motor Nerve - Recording the Abductor Digiti Minimi (ADM), stimulating at wrist

This photograph illustrates the technique for an ulnar motor nerve conduction study, recording from the abductor digiti minimi (ADM) muscle. The recording electrode (black, G1) is placed over the belly of the ADM. The reference electrode (red, G2) is placed at the proximal phalanx of the little finger. For stimulation at the wrist, the stimulator is placed adjacent to the flexor carpi ulnaris tendon. The distance between G1 and the distal stimulating site at the wrist should be 4-6 cm.

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