Dunno about the bending part, you'll just have to try and see what the pain level says (but no taking pain meds and just going on!). With an injured knee and a new bike, especially if it's a heavy one like a Busa, watch out when you stop. Don't let it get started going over in the bad leg direction or your looking at a dropped bike and a possible re-injury. Which knee did you injure? Right won't be as bad of a deal as the left, left leg is the one you typically use to hold the bike at stop lights and such and even shifting can take it's toll after a while. Right leg just rides along and runs the back brake for a parking brake and you can use it to hold that side of the bike on level stops (or not), to move it if it's getting stiff or hurting.
Just some more stuff to consider, be careful, heal soon.
Just some more stuff to consider, be careful, heal soon.