RESUMEN
Diagnosis of peripheral nerve injuries in the past relied on motor and sensory function examination,electrophysiology and MRI.High-frequency ultrasound as a real-time,dynamic,intuitive,non-invasive and repeatable method in diagnosis of peripheral nerve injuries has its own characteristics,which are helpful to finding nerve injury and judging the type of damage to provide important information of the nerve injuries for preoperative evaluation and postoperative followup.Low intensity ultrasound (LIUS) can promote the proliferation of Schwann cell and the regeneration of injured peripheral nerve in rats.LIUS in treatment of nerve injury is still in the experimental stage,and there are many problems to be settled.Nevertheless,clinical application of low-intensity ultrasound is worthy of expectation in future.