Table 1.

Questions addressing face validity

Face validity aspect	Question
Outer appearance	What is your opinion of the outer appearance of this simulator?
	Is it clear in which joint you will be operating?
	Is it clear which portals are being used?
Intraarticular joint	How realistic is the intraarticular anatomy?
	How realistic is the texture of the structures?
	How realistic is the color of the structures?
	How realistic is the size of the structures?
	How realistic is the size of the intraarticular joint space?
	How realistic is the arthroscopic image?
Instruments	How realistic do the instruments look?
	How realistic is the motion of your instruments?
	How realistic does the tissue feel when you are probing?

All questions were answered on a 10-point numerical rating scale.