Pretend I'm a new patient. Briefly educate me on what proprioception is.

This question allows the interviewer to test your technical knowledge as well as gain some insight into your communication skills and ability to educate others. The interviewer uses a keyword here; brief. They want to see that you have the ability to be concise yet still provide the necessary information that the patient needs to understand. Be sure to end with the opportunity for your "patient" to ask questions. If you do not know anything about the topic, be honest and explain that it's one you're not familiar with but are happy to research and learn more about.