bad knee

I have had an upper tibial oseotomy, and the knee brace that I have is getting old. It is a body glove with metal hinges and I am looking for a replacement for it. It looks like the AP 7125 is the one I have now, but I was wondering if the AP 7128 might be better for my knee, but I don’t know the differences between the two braces. what do you recommend?