Among all types of upper extremities neuropathies, the most common is precisely the radial nerve neuropathy. Neuropathy may arise after a deep sleep, if a person has slept on a hard surface with his hand under the head. Therefore, it often occurs after temulence or fatigue. It can also be caused by a prolonged radial nerve squeezing with a crutch or tourniquet. The neuropathy can be a complication of transferred viral infections, intoxications and also the consequence of upper limb injuries.
In case of radial nerve injury in the armpit, the clinical findings consist of such symptoms: elbow and wrist joints extension disorders, “hanging” hand, impossibility of thumb lifting, loss of elbow extensor reflex and carporadial reflex decrease. Sensitive disorders manifest as impaired sensitivity of the posterior forearm surface, opisthenar, and the 1st, 2nd, and partially 3rd fingers, except for terminal phalanges. In case of nerve damaging in the mid of the shoulder, the extension of the forearm and the ulnar extensor reflex are preserved. And in case of radial nerve affection in its lower part, only hand and fingers extension are broken, and sensitive disorders are also observed.
Radial nerve neuropathy is characterized by tenderness to palpation.
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