I read this article at yahoo.com and it shows why Scott Wells missed so much practice. There was a lot of speculation that the surgery he took during the off-season was more serious then it looked. In reality, he was doing something different, that is probably just as important. Your going to have to click the link to find out. The key sentence is:
That's why Coach (Fisher) did an outstanding job of helping me keep it quiet.
Like I said you are going to have to read the article to find out.