1. Consider the following and examine the image to explain the mechanism of this facial numbness

Intensive care staff ask you to see a pregnant woman who has been attacked by a knife wielding assailant. She complains of a unilateral numb face and has had treatment for a haemopneumothorax. You identify an artifical right eye, facial bruising and lacerations, complete unilateral left trigeminal anaesthesia, and blood behind the left ear drum, but no other …