Knee-on-knee collisions are some of the scariest in the NHL, as they happen quickly and can seriously injure a player's leg. While the game happens quickly, it's commonly understood to be a dirty play when a player makes no effort to get out of the way of the knee-on-knee.
The Panthers will miss Barkov. Through 16 games this year, he has tallied 17 points. What is more impressive, though, is his +14 rating. Panthers are hopeful that Barkov will make a speedy recovery.