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A shoulder blade that sticks out is called a “winging” scapula. It usually means that there is weakness of the serratus anterior muscle. If the winging occurs in only one of the scapula, there could be an injury to the long thoracic nerve, which innervates the serratus anterior.
(This answer provided for NATA by the Gustavus Adolphus College Athletic Training Education Program.)
(This answer provided for NATA by the Gustavus Adolphus College Athletic Training Education Program.)
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