if it is OA of both knee, she definately reqiue knee replacement
. now it is the treatment, 100% sucessful, but what degree of knee flexon
she is getting now, after sugery it will be better.symtoms like pain will not be there, go ahead with the surgery. as per as path paramemeters are concern, once ur mother is admitted in the hospital, all will be taken care of. those are a part of any routine surgery.