Injuries to the lower extremity are among the most frequent injuries in all levels of sports and often account for more than 50% of reported injuries.

Football playing surface and injury study: abstract

EAST LANSING, MI—A study by Mark R Villwock, Eric G Meyer, John W Powell, Amy J Fouty, and Roger C Haut of Michigan State (www.obl.msu.edu) was recently conducted.

Injuries to the lower extremity are among the most frequent injuries in all levels of sports and often account for more than 50% of reported injuries (Fernandez et al., 2007).

While translational friction is necessary for high-level performance during any athletic contest, it is generally accepted that excessive rotational friction results in high forces being transmitted to vulnerable anatomic structures which may then precipitate ankle and knee injuries.

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