The nerve fibers grow slowly and, in ideal conditions, may grow about one inch every month after a nerve is sewn back together in surgery.
It can take many months for the nerve to finish growing after an injury depending on many factors including the length that the nerve that needs to grow.
It can also take this long for muscles to work well again. There might be numbness, pain or a “pins and needles” feeling during the healing period. Physical therapy is sometimes needed after a nerve injury.
Results during recovery after nerve injury can depend on your age and health, the type of nerve injury, and the injured body part.