Understanding Common Nerve Problems: Radial, Ulnar, and Median Nerve Issues in the Hand

Jan 31, 2026

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This guide explores common nerve problems affecting the hand and arm, including issues with the radial, ulnar, and median nerves. Symptoms such as numbness and weakness can arise from various conditions, including carpal tunnel syndrome and focal dystonia. We discuss the anatomy of the nerves, the pathways from the brain to the periphery, and the differences between afferent and efferent signals. Insights from Dr. Mark Hallett of the National Institutes of Health are included, along with prevention strategies and treatment remedies for these conditions.

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Understanding Common Nerve Problems: Radial, Ulnar, and Median Nerve Issues in the Hand

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Presentation Transcript

Hand Problems Thomas Mastroianni Some common understandings
Radial Nerve • Radius side of arm • Thumb side of hand • Numbness or weakness
Ulnar Nerve • Ulnar side of arm • 5th finger side of hand and palm • Elbow exposure
Median Nerve • Middle of arm • Middle of hand • Carpal tunnel
Nerve Routes • Brain to Periphery • Two Way Street – Efferent / Afferent • Signal Sending • Pain and symptom referral
Carpal Tunnel
Focal Distonia • Task Specific • Involuntary Muscle Response • Dr. Mark Hallett – National Institutes of Health
Remedies • Prevention vs Cure