I was recently was diagnosed with OA due to an injury several years ago.
I was doing heavy leg workouts and HIIT workouts without realizing I had a problem. A sprained knee brought me to the doctor and now at 46 I am looking at knee replacement surgery within the next few years. I just had surgery to clean out the arthritis so I have not been able to work out for the past month. To put off the surgery as long as I can, I need to totally change my workouts for both cardio and...