Good question, Fred: why, indeed, so long on crutches after the cast comes off? I’m 28 and while I do smoke, my bone density and muscle mass are at or above average, and I lead a high-impact, aggressive life. That’s why I’m seeking a second opinion because my gut, and the medical journals I’ve been reading, tell me there are other courses of treatment I might be able to pursue.
As for the casts, it’s nothing worrisome. The first replacement was because the swelling in my leg went down and I had to get a better-fitting cast. The second replacement was just for a better, tighter, straighter fit. My third one is getting so loose I can reach the top of my knee, but hopefully the second OS I see will find a way that I can have it off and continue to heal.