I had arthrofibrosis which came on straight away after having my second knee replacement so I knew I had a problem when I could not do the bending excercises.. I kept telling the consultant and physios but nothing was resolved until 6 months later when I had to have surgery to release all the scar tissue etc. I am now left with a partial bend. Hope you can get some relief as it's a painful time. Hopefully you will be ok and have a super knee like my first one which is now 12 years old and still going strong. I have both RA and osteo arthritis. best wishes. see the link attached here...
http://www.healthline.com/health/total-knee-rep...

Thanks! You worry about yourself. I will suggest an MRI to my mom.

My dad had one last year and he borrowed an exercise bike from my aunt and he'd do a bit on it once or twice a day along with his exercises and he found it helped enormously.

No tests. Just the way it looked and felt.

Yes. Straight away but sometimes the consultants will dispute this but I know I felt mine stiffen up immediately after surgery. Don't be afraid to ask for check ups for this. Best Wishes