|
Pectoralis major (chest, shoulder,
arm pain):
 Pectoralis major originates
on the ribs, the sternum and the clavicle and inserts on the lateral
aspect of the humerus near the head. Its principal functions are
medial rotation and adduction of the arm. Trigger points in pectoralis
major typically refer pain to the chest, shoulder and arm.
Pectoralis major pain referral zone:
 Translation: "Pectoralis
major" means "the larger muscle of the breast." It's
that big muscle that covers all of each side of your chest. It attaches
to your ribs, your breastbone and your collarbone, and goes up to
attach to the side of the upper part of the bone in your upper arm.
Its main jobs are to pull your arm toward your body and to rotate
it inward. Trigger points in this muscle can cause pain in your chest,
your shoulder and your arm.
|