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Nerve injury classification assists in prognosis and determination of treatment strategy for nerve injuries. Classification was described by Seddon in 1943 and by Sunderland in 1951. [ 1 ] In the lowest degree of nerve injury the nerve remains intact, but signaling ability is damaged, termed neurapraxia .
The second classification of nerve injury is known as the Sunderland classification which is more complex and specific. This classification uses five different degrees of nerve injury, the first one being the least severe and the equivalent to neurapraxia and the most severe being the fifth degree and having the same classification as neurotmesis.
Nerve injury is an injury to a nerve.There is no single classification system that can describe all the many variations of nerve injuries. In 1941, Herbert Seddon introduced a classification of nerve injuries based on three main types of nerve fiber injury and whether there is continuity of the nerve. [1]
As the majority of nerve entrapment doesn't affect the structural integrity of the endoneurium, perineurium, or epineurium, the nerve injuries from nerve entrapment will primarily be type I or II in the Sunderland classification. As nerve entrapment can leave individual nerves in different stages of injury, mixed lesions may be present.
In many cases the potential for nerve recovery (full or partial) after decompression is excellent, as chronic nerve compression is associated with low-grade nerve injury (Sunderland classification I-III) rather than high-grade nerve injury (Sunderland classification IV-V). [63] Nerve decompressions are associated with a significant reduction in ...
Unlike typical neuralgia, this form can also cause pain in the back of the scalp and neck. Pain tends to worsen with talking, facial expressions, chewing, and certain sensations such as a cool breeze. Vascular compression of the trigeminal nerve, infections of the teeth or sinuses, physical trauma, or past viral infections are possible causes ...
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Seddon's classification of nerve injuries came to be adopted internationally. [9] He used the terms neurapraxia, axonotmesis and neurotmesis which had been coined by Lord Cohen of Birkenhead. [7] These were based on the severity of the nerve injury, which in turn influenced the anticipated time for recovery and the prognosis. [7]