My Dad needs knee replacement. This will be his third joint replacement in ten years. He is in a great deal of pain. His ability to get around is being affected. He is 84 and his memory issues are beginning to affect his daily living activities. I'm afraid rehab with be a nightmare and that he may hurt himself because he will not be able to remember precautions. I am the only caregiver and work full time. He will be going to rehab after surgery. With the memory issues becoming more problematic; is surgery the best choice. I love my Dad and want to do what's best for him.