Review Article
The Role of Current Techniques and Concepts in Peripheral Nerve Repair
Table 1
Neurosensory impairment classification according to Sunderland and Seddon.
| Classification of nerve injury | Sunderland | Seddon | Injury | Neurosensory impairment | Recovery potential |
| I | Neuropraxia | Intrafascicular oedema, conduction block | Neuritis, paresthesia | Full (1 day to 1 week) | Possible segmental demyelination | Neuritis, paresthesia | Full (1 to 2 months) |
| II | | Axon severed, endoneurial tube intact | Paresthesia, episodic dysesthesia | Full (2 to 4 months) |
| III | Axonotmesis | Endoneurial tube torn | Paresthesia, dysesthesia | Slow, incomplete (12 months) |
| IV | | Only epineurium intact | Hypoesthesia, dysesthesia, and neuroma formation | Neuroma in continuity |
| V | Neurotmesis | Loss of continuity | Anaesthetic, intractable pain, and neuroma formation | None |
| VI | | Combination of above | Combination of above | Unpredictable |
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