"And just as when Drakos played football at Harvard and experienced more pain in his knees in the days following games on turf, his results showed that AstroTurf creates 80 percent more strain in the ligaments than grass, while next-gen turf surfaces are 45 percent more stressful."
Cadaver Legs Give New Insights Into Athletes' Ligament Tears
11.30.10, 1:30 PM
The Effect of the Shoe-Surface Interface in the Development of Anterior Cruciate Ligament Strain
Mark C. Drakos et al
Journal of Biochemical Engineering January 2010 Vol 132
ABSTRACT: [F]our different shoe-surface combinations: group I (AstroTurf-turf shoes), group II (modern playing turf-turf shoes), group III (modern playing turf-cleats), and group IV (natural grass-cleats). . . . Group IV had significantly less maximum strain p0.05 than each of the other groups.
Soccer injuries: Cleat-natural grass combination may be less likely to result in anterior cruciate ligament injury
January 23, 2010
SUMMARY: Athletes put less strain on their anterior cruciate ligament (ACL) while making a cut on a natural grass surface while wearing a cleat. This is the conclusion from a study that tested the strain placed on the ACL of four different shoe-surface interactions: Astroturf/turf shoe, modern playing turf/turf shoe, modern turf/cleat, and natural grass/cleat.