Radial Nerve Compression
The radial nerve runs down the underside of your arm and controls movement of the triceps muscle, which is located at the back of the upper arm. The radial nerve is responsible for extending the wrist and fingers. It also controls sensation in part of the hand.
Injury to the radial nerve may result in radial neuropathy, also called radial nerve palsy. Radial
nerve injury may be due to physical trauma, infection, or even exposure to toxins. It often causes numbness and tingling or burning pain. It can also be painless. The condition may cause
weakness or difficulty moving your wrist, hand, or fingers. Radial nerve compression or injury may occur at any point along the anatomic course of the nerve and may have varied etiologies. Compression or scarring of the radial nerve at different points along its course may cause denervation of extensor or supinator muscles and numbness or paresthesias in the distribution of the radial sensory nerve (RSN). The result can be pain, weakness, and dysfunction.
The most frequent site of compression is in the proximal forearm in the area of the supinator and involves the posterior interosseous branch. Radial tunnel
syndrome is a set of symptoms that include fatigue or a dull, aching pain at the top of the forearm with use. Although less common, symptoms can also occur at the back of the hand or wrist.
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