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Ulnar Motor Nerve - ADM 2

Ulnar Motor Nerve - ADM 2
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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. In this photograph, stimulation is being performed at the elbow, just distal to the ulnar groove. Stimulation both proximal and distal to the elbow is essential for detecting an ulnar entrapment at the elbow, the most common cause of ulnar mononeuropathy.

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