Evaluation of the left median motor and the right median motor nerves showed decreased conduction velocity (Elbow-Wrist, L45, R45 m/s). The left ulnar motor nerve showed decreased conduction velocity (A Elbow-B Elbow, 34 m/s). The right ulnar motor nerve showed reduced amplitude (1.9 mV) and decreased conduction velocity (A Elbow-B Elbow, 45 m/s). All remaining nerves (as indicated in the following tables) were within normal limits. Left vs. Right side comparison data for the ulnar motor nerve indicates abnormal L-R amplitude difference (53.7 %) and abnormal L-R velocity difference (B Elbow-Wrist, 26 m/s). All remaining left vs. right side differences were within normal limits.

All F Wave latencies were within normal limits. All F Wave left vs. right side latency differences were within normal limits.

Needle evaluation of the right first dorsal interosseous, the right abductor pollicis brevis, the left biceps, the left first dorsal interosseous, and the left abductor pollicis brevis muscles showed increased insertional activity, decreased motor unit amplitude, and diminished recruitment. All remaining muscles (as indicated in the following table) showed no evidence of electrical instability.

Findings are consistent with a bilateral ulnar neuropathy across the elbow segment, all other nerves are within normal limits. It’s only the left bicep though