Why Throwing 'Over the Top' May Hurt Your Arm
May 16, 2012
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A common pitching mechanic still taught is to throw "Over the Top", causing many kids to throw like this:
But this may be causing serious increased risk for elbow AND shoulder injury.
This 2000 study:
found tilting the shoulders OVER 10 degrees significantly increased elbow stress:
while more than 20 degrees of shoulder tilt significantly increased shoulder stress:
That research was followed up with this 2006 study:
where 10 degrees of shoulder tilt was "the best":
What Does 10 Degrees of Shoulder Tilt Look Like?
while 40 degrees of shoulder tilt DOUBLED elbow stress:
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