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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 .
Classification of nerve damage was well-defined by Sir Herbert Seddon and Sunderland in a system that remains in use. [7] The adjacent table details the forms (neurapraxia, axonotmesis and neurotmesis) and degrees of nerve injury that occur as a result of exposure to various temperatures, with the intent to interrupt nerve traffic and relieve pain.
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]
Nerve compression can result in various stages of nerve injury. The majority of carpal tunnel syndrome patients have a degree I nerve injury (Sunderland classification), also called neuropraxia. [17] This is characterized by a conduction block, segmental demyelination, and intact axons.
Neurotmesis is classified under the Seddon system which is defined by three grades of nerve injury. The mildest grade is referred to as neurapraxia and is characterized by a reduction or complete blockage of conduction across a segment of nerve while axonal continuity is maintained and nerve conduction is preserved. [1]
Surgery can be done in order to help the nerve heal. The surgery will help with nerve regeneration, providing guidance to the nerve sprouts on where to attach on the proximal side of the injury. Damaged nerve axons can reattach themselves after surgery. [3] Treatment of axonotmesis also consists of: Physical therapy or Occupational Therapy ...
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Nervous System Organization - The Motor and Sensory Systems. The peripheral nervous system has the ability to regrow cut nerves. Motor axons preferentially reinnervate motor pathways. The tendency of motor axons to reinnervate motor pathways instead of cutaneous pathways is influenced by a number of factors in the PNS system.