I had been in a very long estate clean out for 5 years (very physical) and had worn my left knee and right shoulder, which had been repaired two times. I had a revision done April of 2018. Came back great by June with full use (I'm a very active race car driver and car builder). Had my right shoulder fully replaced in March 2019, and as of today, May 1st, I have 90% of my use back. My wife had her knee replaced in the middle of April 2019 and it was my turn to be nurse. She is already walking with a cane and well on her way to normal.