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. 
Workplace Injury
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.
Trigger points in the multifidus muscle.
The multifidus muscle is a long muscle that travels the length of the spine. It has different actions on different parts of the spine. It extends and laterally flexes the cervical and lumbar spine, and rotates the thoracic spine. Trigger points in this muscle are common due to poor posture and bad movement mechanics. Trigger points in the lumbar area area are a common cause of low back pain. These lower points can also refer into the abdomen. Points that form in the cervical region will refer pain down the neck into the shoulder blade area.
Trigger points in the sternocleidomastoid muscles
The sternocleidomastoid muscles are two strap like muscles located in the front of the neck. They are responsible for producing head movements like flexion, as well as rotating the head to the opposite side. These muscles often become chronically shortened due to poor posture such as sitting in front of a computer screen for to long. When this happens trigger points can form. These points will refer pain into the head, face, and skull producing headaches. Trigger points won’t resolve by themselves, a manual intervention like trigger point massage is required to cause a release.
Trigger points up close.
trigger points are one of the most common sources of pain in the body. Once a trigger point has formed it won’t release on its own. Trigger point massage is one of the most effective way to release a point. It involves using a deep focused pressure applied directly to the knot. This frees the contracted tissue and stimulates healing.
Trigger point referral patterns.
Myofascial trigger points form in a muscle due to overload stress. A portion of muscle fibers lock up into a knot. Once formed these points will irritate sensory nerves that are in proximity to the knot. When this happens,
trigger points have the capacity to refer pain along specific distributions or patterns that are well mapped out. sometimes pain may be felt at a great distance away from the actual point itself.
Trigger points in the glute medius
the glute medius is a major pelvic stablizer. It is often overworked in runners and hockey players. trigger points in this muscle will cause pain to be felt in the hip and down the back of the leg.
Trigger points.
Trigger points are knots of contracted muscle or connective tissue that form as a result of overload stress. Once formed these points will produce pain, refered pain, weakness, and stiffness. Trigger points can also mimic other conditions such as Carple tunnel syndrome and sciatica. Trigger points will on go away on their own, they must be manually released.
Trigger points in the sternocleidomastoid muscle
The sternocleidomastoid muscles are two strap like muscles located in the front of you neck. They often become overworked from poor sitting posture. Trigger points in these muscles will cause referral pain into the head and around the eye, causing migraine type pain.
Trigger points in the trapezius muscle.
The trapezius muscle is a large diamond shaped muscle located in your back. This muscle is often overloaded due to poor sitting posture or excessive exercise. When this occurs trigger points will form. These points can cause back, neck, and shoulder pain. Trigger points in the upper traps are a leading cause of headache.
Aberdeen Chiropractic 