Having had a medial PKR done last May, and having had the lateral side flare with Rheumatoid Arthritis and degrade, I am getting really nervous about the TKR I am going to have on 13th May. The OS doing the op (a second opinion as I lost all faith in the chap who did the PKR), says I am an 'interesting case', and the op will be 'complicated' as I have a valgus knee, and the previous OS had severely trimmed the bone to fit the prosthetic. I know I need the op as I am rapidly losing mobility, my right quad is very week, and I am not getting much sleep. But the more nervous I get the less sleep I get aswell. sorry to vent.