I am about 6 weeks post replacement. At 4 weeks I had my first post op visit and my x-ray indicated about a 5mm subsidence from the original position of the femoral implant. Dr. instructed me to basically repeat my first month post surgery routine for another month. I am about 2 weeks into that period and feel very well. Just wondering if anyone else has dealt with this and what your outcome was. My intension, like most of us, is to be back on the road preparing to run my next marathon (Marine Corps– October 2021). Do I need to be concerned at all? This experience has pretty much been pain free to this point. Thank you very much.