 The patient is a 61-year-old white female status post right total knee replacement secondary to degenerative joint disease performed by Dr. A at ABCD Hospital on 08/21/2007.  The patient was transfused with 2 units of autologous blood postoperatively.  She received DVT prophylaxis with a combination of Coumadin, Lovenox, SCD boots, and TED stockings.  The remainder of her postoperative course was uneventful.  She was discharged on 08/24/2007 from ABCD Hospital and admitted to the transitional care unit at XYZ Services for evaluation and rehabilitation.  The patient reports that her last bowel movement was on 08/24/2007 just prior to her discharge from ABCD Hospital.  She denies any urological symptoms such as dysuria, incomplete bladder emptying or other voiding difficulties.  She reports having some right knee pain, which is most intense at a "certain position."  The patient is unable to elaborate on which "certain position" causes her the most discomfort.