An NFL panel found that certain serious knee and ankle injuries happen more often in games played on the most popular brand of artificial turf than on grass.
The league's Injury and Safety Panel is presenting its study Friday at the annual meeting of the American Academy of Orthopaedic Surgeons in New Orleans.
The report examined the 2002-08 NFL seasons, comparing games played on grass to those on FieldTurf. It found that the rate of anterior cruciate ligament injuries was 88 percent higher in FieldTurf games - a conclusion the manufacturer of the synthetic field hotly disputes.
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