I'm scheduled for my third TKR in July. I have okay flexion but can't straighten my knee and have onerous pain all.the.time. As you all know, it is quite debilitating. I believe I have an overabundance of scar tissue as well. Dr. Trousdale says he can straighten my leg, and I am hoping the third time's a charm. Some days I'm ready to just get it amputated, but of course that would be awful, too.