Superficial radial sensory neuropathy: Medial and lateral branch injury

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Abstract

Introduction:

Superficial radial sensory nerve (SRN) injury may involve the main nerve or its distal medial or lateral branch. We investigated the utility of SRN conduction studies on the medial and lateral branches in patients with suspected SRN injury.

Methods:

Fifteen patients with symptoms of SRN neuropathy were studied. Their clinical and electrophysiological findings were assessed according to sensory symptom areas. Three active recording electrode positions were used: snuff box (position A); medial branch (position B); and lateral branch (position C).

Results:

In 7 patients with medial area symptoms, abnormal findings were seen in position B (100%) and position A (71%). In 3 patients with medial and lateral area symptoms, abnormal findings were seen in all positions. In 5 patients with lateral symptoms, abnormal findings were seen in position C only.

Conclusions:

Nerve conduction studies for each branch of the SRN are useful in patients with suspected SRN neuropathy. Muscle Nerve53: 690–693, 2016

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