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Pain
Neck pain and the trapezius muscle.
The Trapezius muscle is a large diamond shaped muscle located in the back and neck. It is responsible for for a number of shoulder and neck movements and helps maintain proper posture. This muscle is probably the most common muscle that I work on in the clinic. It is frequently strained and develops trigger points easily. The trigger points in the upper portion of this muscle are the most common to be found in the body. Trigger points will refer pain into the upper back, neck, shoulder, and even into the head and temple causing headaches. Chronic trigger points in this muscle are also a frequent cause of a stiff neck.
Trigger point pain and the Teres Major muscle.
The Teres major muscle is located at the back of the armpit. It originates on the posterior aspect of the inferior angle of the scapula, and inserts and inserts on the medial lip of the intertubercular sulcus of the humerus. It’s main function is to assist adduction, internal rotation, and extension of the arm. This muscle only becomes active when there is resistance added to these movements. Trigger point pain from this muscle will cause pain to be felt deep into the posterior shoulder 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. 
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.
Trigger points in the pectoralis major muscle.
A very common muscle to become overloaded and damaged, and thus develop trigger points, is the pectoralis major muscle. This is the muscle that makes up the chest. It’s main functions are adduction and internal rotation at the shoulder. Poor rounded shoulder posture is a common cause of pec tightness and trigger points. trigger points in this muscle will produce pain felt into the front of the shoulder, the chest, and down the medial arm. If these symptoms occur in the left pec it can mimick heart pain. In women, these points can be a cause of breast pain and nipple hypersensitivity.
Trigger point massage therapy in Winnipeg.
Shoulder and arm pain from the subscapularis muscle.
The subscapularis muscle is one of the rotator cuff muscles. It is located on the inside of the scapula, and can be difficult to access. This muscle functions to internally rotate the arm as well as to adduct the shoulder. It is also a stabilizer of the shoulder joint. When this muscle is overloaded or injured trigger points can form. These points will refer pain into the back of the shoulder and down the inside of the arm to the wrist. Trigger points in the subscapularis are often associated with a frozen shoulder.
Tricep trigger points and elbow pain.
The triceps muscle is the main extensor of the elbow. It is the muscle in the back part of the arm and travels from the shoulder to the elbow. Trigger points in this muscle will cause pain when trying to straighten the elbow. Tricep trigger points refer pain into both the inside and outside of the elbow and are thus a common cause of both tennis and golfers elbow.
Bicep brachii trigger points
The biceps brachii is the most well-known of the arm due to its prominence. It is the muscle we think of when we imagine someone with ‘big arms.’ Its chief role is elbow flexion, and, while it is not the only elbow flexor, its role makes it prone to
overload problems which can lead to trigger points. When trigger points form they will produce pain felt in the elbow arm and up into the front of the shoulder. Shoulder pain is usually felt as superficial as opposed to deep in the joint.
Aberdeen Chiropractic 