I understand and can relate. I've had a replacement, manipulation, scope and revision all in 2 yrs and I'm now only at 70 degrees and my knee is twice the size of my other. I'm being tested to see if I'm allergic to metals, nickle and the cement that used in surgery. Pt did nothing but cause me pain and discomfort. Your husband should be more sympathetic it's a pain you don't understand until you've experienced it.