United StatesHi, wow, you sound like me. My first knee surgery at age 11, I have two TKRs now and my legs are both straight for the first time in my life also! I am 59, but going to be 60 in.... (drum roll)I had my left TKR 12/27/12 and my right one on 9/1/15. I was born knock kneed and wore my knees out at an early age. I am approaching 59 and now have straight legs for the 1st time in my life.