Scapulothoracic muscle activity and recruitment timing

How is scapulothoracic muscle activity and recruitment timing altered in the presence of pathology?

Correct functioning of the scapulothoracic joint is essential for load transfer between the trunk and the upper extremity. This largely depends on sufficient activity levels and adequate recruitment timing in the periscapular musles: among others the upper, middle and lower trapezius (UT, MT and LT, respectively) and the serratus anterior (SA). Dysfunction in the scapulothoracic joint have been linked to the development of a number of shoulder disorders.


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