Knee replacement and knee revision problems

I had a TKR in 2014 and a knee revision in 2017. after the revision I felt great with about 110°ROM which for me was alot but after a year or so my ROM kept getting worse no matter how much stretching I did. The doctor told me I build up a severe amount of tissue no matter what I do and said nothing else can be done. I also probably need a hip replacement on the same side, my ROM is only about 40° now. Is there anything else I can do?
Thank you.