That is great news about the biking! Kneerah! One of the things that bothered me post surgery was the differential in leg muscles between Spence's and non-op leg. I had noticed that my quads were dwindling in op leg prior to surgery, which I suspect was due to wearing unloader brace all day every day for 6+ months prior to surgery, and as a result, muscles didn't work as hard. I wanted to regain that muscle mass back in a hurry, and kept pressing my PT to *challenge* me more, but now I am grateful that she knew better! So I am trying to be eh-hem, *patient*, let Spence settle in well, and then push for strength. I hope that you achieve the goals you are hoping for by increasing exercise.