Trigger points in the Teres minor muscle

The Teres minor muscle is on of the rotator cuff muscles. It originates on the lateral border of the scapula, and inserts on the inferior facet of the greater tubercle of the humerus. This muscle assists with external rotation of the humerus as well as shoulder stability. This muscle is often damaged with a shoulder injury. Trigger points will refer into the posterior deltoid and down the back of the arm.

Pain from subclavius trigger points

The Subclavius muscle is a small muscle on the underside of the clavicle. It originates on the first rib and it’s cartilage, and inserts on the inferior clavicle. It’s main function is to assist in protraction of the shoulder. This muscle is often shortened and tight from poor rounded shoulder posture. When trigger points form in this muscle they can refer pain into the anterior shoulder and down the radial part of the arm. Pain can also be referred into the thumb and first two fingers.

Trigger point pain from the sternalis muscle

The sternalis muscle is a little known muscle located at the sternum. This muscle seems to be vestigial in that it doesn’t have a known function. In originates on the superior portion of the sternum and the upper part of the pectoralis muscle. It’s insertion is the cartilage of ribs 3-7, or sometimes the sheath of the rectus abdominis, or the lower part of pectoralis major. Even though this muscle doesn’t seem to have a purpose anymore it can still harbour trigger points. These points will cause pain to be felt intensely deep in the sternum, with spillover pain radiating down the inside of the arm.

Supraspinatus trigger points

The supraspinatus muscle is one of the muscles that makes up your rotator cuff. It attaches from the scapula to the humerus. It functions mainly to laterally rotate the arm as well as stabilize the shoulder joint. It also assists in abduction of the arm. This muscle can often harbour stubborn trigger points. These points refer pain into the shoulder, down the arm, into the elbow, and even into the forearm if irritated enough. These points can be effectively treated with trigger point massage therapy.