Thanks for your input. It seemed a strange skiing injury to me as well. I originally thought I did my ACL. I've had some tendonitis in that knee before, but it wasn't bothering me at all before the injury. It's my back leg. Just turned hard at 3 ball, maybe running a bit late, but that's it. It loaded and 'popped'. Doctor says just a fluke thing, but more age related than form etc. I'm 54, so didn't like to hear that LOL! I'm not unfit either. In the gym regularly, so that is a frustration, as you think you are doing prevention, right? I've replayed it a million times, wondering what I could have done differently, but its a never-ending loop with no clear answer.
Surgery was good, rehab will be a while for sure ~ 6 months at least. I'm committed to doing it right. Trying to set a goal to be back skiing again beginning of next June.