Your ROM and extension after only 7 weeks out are good. If you are not feeling unusual discomfort there may be some scar tissue. Your surgeon would be able to advise you on this better than anyone else, in that he can obtain images, etc. If you have a physical therapist, then a therapist would likely be able to make a suggestion as to whether it could be scar tissue.

I am 4 months post op from TKR and extension is real good but only 70-80 degrees ROM! They won’t scope to remove scar tissue as there is other issues similar to CRPS keeping me from surgery. I have been tested negative for CRPS and they have their hands on the air on don’t know what I have. I tried to get into Mayos in Scottsdale and Rochester for testing both Orthopedic and Neurological....but got denied. I tried 3 other Ortho groups and have been denied. Can’t get into a specialist Ortho Doc till July 10th!! In the meantime I walk around like a peg legged 56 year old frustrated Nebraskan!!!

That's a pretty good flexion and perfect extension. There are various reasons for trouble with flexion; I think there are many of us here who can tell you our shock at being a year out and still not reaching the flexion we expected. 115 is about my max - very disappointing. But I am much more stable and able to do more things with less pain than before.