I had TKR 3 & 1/2 wks ago. How soon are you suppose to be able to ride a recumbent bike?I tried to do that today but could only get half way around. I could not bring the knee down. It really felt tight at that half way point. I started walking up & down stairs, one leg over the other today. Did pretty well with that. I have a 90 degree bend & the PT wants it to get to a 120. Sure hope I don't have to go through a force-bend.