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Pectoralis minor: Far from a minor problem

from By Heidi Dawson

Pectoralis minor is the smaller sibling of the larger and more talked about pectoralis major. But for such a small, seemingly insignificant muscle, it can sure cause some problems. The pec minor is found underneath its larger partner, originating from ribs 3, 4 and 5 and passing superiorly and laterally to attach to the coracoid process of the scapula. Its functions are to stabilize the scapula, as well as depressing, protracting and downwardly rotating it. When the scapula is fixed, pec minor will also assist in elevating the ribcage. OK, so we know where it is and what it does. But why is it often so troublesome? more


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