Isolated dislocation of the radial head occurs most commonly with a axial punch injury associated with slight elbow flexion and forearm pronation or extreme rotation.

• 孤立性桡骨头脱位在前臂轻度旋前、屈肘位，桡骨头受到轴向冲击力或前臂在极度旋转位，桡骨头受到扭转暴力时最容易发生。