Biomechanics of Elbow Injuries During Throwing

June 21, 2009

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Pathomechanics

Biomechanics of Elbow Injuries During Throwing

Elbow injuries in pitchers can be divided into three types, based upon their location within the joint. All three types of elbow injuries are related to the large rotational force – called “torque” – needed to slow down the cocking of the arm and accelerate the forearm, hand, and ball forward. Elbow torque is greatest when the arm is in its maximum cocked position.

Medial Elbow Injuries – The Ulnar Collateral Ligament

From the cocked position, the ulnar collateral ligament (UCL) pulls the forearm forward with the rotating upper arm. The tremendous tension produced in the relatively small UCL is close to its limit. Read more

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