Objective: To investigate the course and features of the retromandibular vein and discuss its clinical significance during the osteotomy of angle of mandible.

• 目的:明确下颌后静脉的解剖学特点及其与下颌角之间的解剖关系,为下颌角截骨术中避免损伤下颌后静脉提供解剖学依据。