Abstract: Intracranial hematoma and intracranial hypertension are common after severe head injury. Then craniotomy is needed to perform in time. Among the operational approaches, pterional craniotomy for its advantage to expose the skull base and saddle area is usually selected, however, inappropriate dissection of the temporal muscle often induce postoperationive muscle atrophy, and mouth opening limited. This article reviews the postoperationive
pseudoankylosis after severe head injury.