I don't think I was at 110 at 6 weeks, even with the therapist's help. Swelling had a lot to do with it, and my range of motion varied from session to session, depending on the swelling. I could use the stationary bicycle at PT, but not the one I had at home because of it. My cycle at home just didn't allow for my limited range of motion until I was nearly a year out! I have had mild lymphedema in that leg since long before the TKR, so my swelling is more persistent than some, but icing after PT seemed to move things along. For me, relaxing my leg while also bending it also seemed to help, and that was easier when I was lying on my side. I still loosen it up on my side in bed when it gets stiff.