Do electromyography (needle examination) in the hospital, will it damage the nerves?

Good question. Before understanding this problem, we need to know how the needle electromyography is completed and what the structure of nerves and muscles is.

Generally speaking, people are electrically driven creatures, nerves are equivalent to wires, and muscles are equivalent to electrical appliances. The brain sends out electrical signals to control the activities of various electrical appliances. When doing needle electromyography, the concentric needle is inserted into the muscle. At this time, there was no external stimulus, and the examination was completed entirely by the spontaneous discharge of the muscle itself, and the discharge of muscle fibers was recorded. The purpose of the examination is to see the electrophysiological performance of muscles in complete calm state, mild exertion state and maximum exertion state. Needle electrode needle area is very small, generally only slightly damage to muscle fibers. There are no nerves in muscles, only the joints between nerves and muscles, so it is generally impossible to damage nerves.