Mine took ages to heal. Everytime 4 weeks I saw the consultant and he said leave it 4 more weeks. After 4 months it got operated on. But I am apparently in the minority and most heal fully within 12 weeks.
As far as a turbo goes, a friend of mine who races hates the thing but if he can't get out and ride he uses the turbo flat out for 1 hour as this is as long as he can do before the boredom sets in. Interval training works well on a turbo. Shorter invervals at high intensity then ease off for twice as long, repeat, repeat, repeat, sit on sofa!!