what muscles are injured in a winged scapula
Winging of the scapula is a surprisingly common physical sign, but because it is often asymptomatic it receives little attention. However, symptoms of pain, weakness, or cosmetic deformity may demand attention. Winging is also a useful sign to suggest underlying problems with the shoulder. Winging may be caused by injury or dysfunction of the muscles themselves or the nerves that supply the muscles. Causes: 1  Loss of serratus anterior muscle function. 2  Loss of trapezius muscle function. 3  Weakness of all the scapula stabilisers. 4  Loss of the scapular suspensory mechanism.