Clinical Findings and Electrodiagnostic Testing in Ulnar Neuropathy at the Elbow and Differences According to Site and Type of Nerve Damage.

American Journal of Physical Medicine & Rehabilitation
Claudia VinciguerraM Mondelli

Abstract

The aim of the study was to evaluate the clinical and electrodiagnostic testing in ulnar neuropathy at the elbow and differences according to site (humeroulnar arcade vs. retroepicondylar groove) and injury physiopathology (axonal vs. demyelinating), through prospective multicenter case-control study. Cases and controls were matched by age and sex. Ulnar neuropathy at the elbow diagnosis was made on symptoms. Statistical analysis was performed using Mann-Whitney, χ, and analysis of variance tests. One hundred forty-four cases and 144 controls were enrolled. Sensory loss in the fifth finger had the highest sensitivity (70.8%) compared with clinical findings. Motor conduction velocity across elbow reached the highest sensitivity (84.7%) in localizing ulnar neuropathy at the elbow recording from at least one of the two hand muscles (first dorsal interosseous and abductor digiti minimi). Abnormal sensory action potential amplitude from the fifth finger occurred more frequently in axonal than in demyelinating forms. Differences between retroepicondylar groove and humeroulnar arcade regarded conduction block and job type. Clinical findings have less usefulness than electrodiagnostic testing in ulnar neuropathy at the elbow diagnosis....Continue Reading

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Citations

Nov 4, 2020·Journal of the Peripheral Nervous System : JPNS·Mauro MondelliStefania Curti
Sep 11, 2020·Skeletal Radiology·Thiru SivakumaranYoshimi Endo
Sep 10, 2021·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Mauro MondelliClaudia Vinciguerra
Nov 2, 2021·Muscle & Nerve·Mauro Mondelli, Alessandro Aretini

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