Third week of rehab.  My last therapy session I was doing half spins on a recumbent bike trainer.  By the end of the session I was able to complete one reverse revolution.  Still plenty of work but it was a start.  And, the good news, is the therapist indicated I could put my bike on a trainer and work on flexion and extension.  So I'm basically on the bike but obviously unable to ride since I can't do a full spin.  But again, it's a start.  Looking forward to more rehab.