My 1st ten years coaching we had grass, the last 12 year on field turf. I honestly don't remember the non contact knee injuries happening on grass all that much, or Maybe at all. I can think of a couple bad ones on turf. One that made an audible pop that people 20 feet away heard.there are tons. like, tons and tons.
here's one:
20% more non-contact injuries occur on turf vs grass surfaces