AAEE minimonograph #31: The electrodiagnosis of ulnar neuropathy at the elbow

Abstract

Electrodiagnostic testing is useful in evaluating ulnar nerve elbow lesions. A flexed elbow seems preferable for conduction studies, since it eliminates the elbow segment slowing found in normals done in the extended position. Slowing of the motor velocity in the elbow segment was the most frequent abnormality in this study. Sensory conduction studies and needle examination each provided additional helpful data. Latency to ulnar forearm muscles and "inching" stimulations around the elbow are techniques that also deserve to be included in our standard armamentarium.