The epineurium of the peripheral nerve is contiguous with the dural mater, providing extra support to the peripheral nerves. In cases where the nerve roots have been torn, recovery in unlikely without new experimental surgical techniques. The diagnosis may be confirmed by EMG examination in 5-7 days. The evidence of denervation will be evident. If there is no nerve conduction 72 hours after the injury, then avulsion is most likely.
Treatment is with time, physical therapy and protection from injury.
On the other hand, if the leg gets infected or troubles the patient, amputation may help the patient. Serial neurologic assessments and EMG examinations may help determine the ultimate prognosis. These patients can attack the foot causing considerable self-mutilation, even months after the initial injury.