NFL study will show that "most severe injuries to the knee and ankle occur on artificial turf"

...A new, exhaustive 10-year study of injuries throughout the NFL will be released soon and will show that most severe injuries to the knee and ankle occur on artificial turf.
The study also will be used to try to educate players around the league as to the proper shoes to wear when they do play on artificial turf. While the colors must be correct, players have free choice as to the kind of shoes they wear. Many still insist on wearing spikes designed for grass on artificial turf rather than the plastic nubs designed for the fake surfaces, and that, the study will show, can lead to more injuries...

Read more: http://www.post-gazette.com/pg/11310/1187621-66-0.stm#ixzz1dYMYPJbR