I'm " bach'in' " it with you. My bride went to have a knee replaced. Takes around ten days for surgery and rehab to get her back on her feet.
Oh no! All the best for her surgery and swift recovery! Knee problems are horrible -- my mom had both her knees operated on but nothing so big as of yet (knock on wood). And in the meantime -- sleep well! (I'm going to try to sleep earlier tonight)