Good news. I need a knee replacement. (I've had 2 hips replaced, 3 back surgeries, orthoplasty R foot, ETC... Who has experience with this? how long before I can walk, or say...take a trip to San Francisco for 2 week? I need to prove my back is structurally sound before he'll do it, and I have rehab 3x a week for a month(!!!) no painkillers, before I qualify. Please share your happy experiences. (i'm going to HSS in NYC) Love, Mother (lost my) Sanity.