my grandmother had her knee replaced 5-6 weeks ago. since then, she cries all the time, then cusses anyone out and has kicked people out of her house. she has always been grouchy, but NOT like this. she barely answers the phone, and has disconnected her doorbell. her orthpedist said it is related to her surgery/meds. her hand has also been numb since surgery also. again-blamed on surgery. i'm a nurse, so i am no dummy, but this just seems like it is not getter better but worse. i'm worried she may have sufferred a small stroke affecting her mood control.