He does look back, and it's enough of recognizable body language that he takes the meaning. "Not that I know of."

He also recognizes the urgency of the situation, and they really don't have time for him to be sitting around feeling sorry for himself like this. So he starts the laborious task of standing up. It's halting, and he winces, but that's the only indication he gives of any pain he's in.

He turns back to Rinzler with an exasperated huff of breath. "Here to escort me again?"