Had my first experience with the knee to face scenario today. I know it's a common injury for TS fronts and maybe a couple others. This one was from a Heel 5. Same trick I wrecked my ankle on about 6 weeks ago. If it injures you more times then you land it, maybe ya ought to let it go!
Doctor said it was very close to the bone. 10 stitches total. Worst part: It happened on the first set of the first day of a 3-day weekend.