Nerve cells belong to the permanent cells, belong to the non-renewable cells, broken nerves can not be repaired and regenerated, only a small number of nerve damage after active and timely treatment can be repaired.
Nerve in the trauma, compression, inflammation stimulation and other factors lead to minor injuries, timely symptomatic treatment of trauma, surgical excision of compression, taking antibiotics to control inflammation, while taking nutritive drugs such as methylcobalamin, vitamin B1, etc. can help repair the damaged nerves normally.
However, if the nerve is severely damaged or necrotic, the nerve cells do not have the ability to regenerate, and even after active treatment, they cannot be repaired and regenerated back to normal.