0 the action of tearing away a part of the body as a result of an accident or surgery -- （因意外事故或外科手术，身体一部分的）撕脱，抽出
Facial nerve avulsion is used to treat the involuntary twitching involved in benign essential blepharospasm.
A nail avulsion is performed to remove all or part of a chronic ingrown nail.
Generally muscular avulsion is prevented due to the neurological limitations placed on muscle contractions.
The direct impact can cause an avulsion fracture where a portion of bone is removed by a muscle.
Avulsion fractures occur where muscles are attached: anterior superior and inferior iliac spines, ischial tuberosities, and ischiopubic rami.
It is commonly injured in sprain-type inversion injuries producing an avulsion fracture at the anterolateral process of the calcaneus.
Three remained in severe heart failure, 3 suffered valve avulsion, and 1 had a persistent severe and increasing gradient.
Conversely, some patients with plexus avulsions report pain reduction with sensory input to the affected limb.
