Numbness in the Hand/Nerve Lesions

Abstract

The sensibility is best tested by pinching with tweezers and not by pinpricking the sensory areas of the affected nerves (see Fig. 1 of chapter “Neck Pain”, page 146). The sudomotor function disappears in denervated areas, which is why these sections become completely dried up. Loss of motor function is easily checked through thumb opposition (i.e. the combination of flexion and adduction) for the median nerve, through ab- and adduction of the fingers for the ulnar nerve, and by checking the extensor function of the MCP joints and the wrist for the radial nerve.