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Radial nerve dysfuction
Radial nerve dysfunction is also known as radial neuropathy or radial mononeuropathy. It is a problem associated with the radial nerve resulting from injury consisting of acute trauma to the radial nerve. The damage has sensory consequences, as it interferes with the radial nerve's innervation of the skin of the posterior forearm, lateral three digits, and the dorsal surface of the lateral side of the palm. The damage also has motor consequences, as it interferes with the radial nerve's innervation of the muscles associated with the extension at the elbow, wrist, and figers, as well the supination of the forearm.〔(【引用サイトリンク】website=The Radial Nerve - Teach Me Anatomy )〕 This type of injury can be difficult to localize, but relatively common, as many ordinary occurrences can lead to the injury and resulting mononeuropathy. One out of every ten patients suffering from radial nerve dysfunction do so because of a fractured humerus.
==Mechanism==
The radial nerve, like any other in the nervous system, is vulnerable to damage. This damage can originate when the nerve fibers experience pressure, stretching, or cutting. All of the aforementioned issues can prevent an action potential from continuing down the nerve, which would interrupt signal transduction to and from the brain. As a result of the interrupted signal, the patient may experience loss of feeling or motor control.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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