[ScottfromNJ]

Palmer had just released the ball prior to the hit and the lineman pushed/guided Kimo into him. If anything, it's more of a turf injury because Carsons foot appeared to get caught in the carpet as he got hit causing his knee to twist.

[A CA Guy]

The lineman pushed the guy away to the side of Palmer and he had to make a specific move for the knee. He did not fall in the direction he tackled.
Kimo was pinned and had only the upper body to tackle with and decided to reach up for the SIDE of the Palmer knee and to draw it sideways to himself.

Biomechanics doesn't work that way and the knee had to go.