Knee Replacement Implant Preparing for Surgery When you and your orthopedic surgeon decide that knee replacement surgery is the best option to relieve pain and restore motion, you will begin the normal preparation for surgery. You should inform your surgeon about any medications you are presently taking because some medications must be stopped before surgery. All surgeries carry certain risks and possible complications. Before surgery, your surgeon will explain the possible complications. You may be asked to donate blood before your surgery. There are several options regarding blood donation and surgery, and all of these options should be explained to you. Surgery also requires anesthesia. There may be some options regarding anesthesia and they will be explained to you. Your options will be based on your health history, the medications you presently take, and the results of your physical examination. Your orthopedic surgeon may ask you to see your primary care physician to make sure that you do not have any health conditions that may complicate your surgery. Your surgeon may also recommend that you start a strengthening program before surgery. The exercises that you may perform are designed add strength, flexibility, and support to your leg. Strengthening your leg muscles before surgery can assist your postoperative recovery. Content provided by Orthopaedic Avenue a site published by Biomet, Inc.