A year since Dr Eifler repaired my rt. rotator cuff & 9.5 months since my left cuff; 5 months since treating my knee for inflammation & pain: I just returned from an archery hunt in Northern AZ where I put both my shoulders & knee to the test at elevation in rocky terrain. I have never felt better ! I was able to prepare by working out at the gym and on the archery range. As Dr. Eifler promised, my shoulders have never felt better & my knee managed the inevitable stress test Thx DR.& staff !