@riderwayne I too was apprehensive about having a general anesthesia since after my first TKR I was left in a very confused state. My orthopedic surgeon said that was not a problem. Whatever I had it put me to sleep but it did not bother me afterward at all.
As @kajon commented I would discuss either with the anesthesiologist or your orthopedic surgeon. He is really the one who determines what type of anesthesia is used I think unless there are unusual circumstances.
JK