Grant James Dickey

NFL player Damar Hamlin’s injury during a game on Jan. 2 may have been a heart injury called commotio cordis. Researchers are working on ways to prevent this rare but often fatal sports injury. (AP Photo/Joshua A. Bickel)

Damar Hamlin injury: Was it commotio cordis? How to prevent a potentially fatal blow to the heart in young athletes

Commotio cordis is the result of blunt trauma to the heart, and is one of the leading causes of sudden cardiac death in youth sports. Improvements in protective equipment may help prevent it.

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