![coracoid process 3 muscles coracoid process 3 muscles](http://shoulderjoint.weebly.com/uploads/2/4/3/6/24368658/40549.png)
Locate the anterior border of the axilla. Positioning: client supine with arm resting at the side.ġ. Insertion: Medial shaft, middle third of the humerus This tension or decreased mobility may be observed as an inability to lay the shoulder and arm flat on the table and next to the body when the client is supine. Sleeping with arms overhead, or performing repetitive tasks like painting or scrubbing, also creates tension and decreases tissue mobility in this area. This position is commonly used when doing computer work, driving, texting, typing, video gaming, and writing. Repetitive or prolonged activities that require moving or maintaining the upper extremity up and forward may create hypertonicity in the coracobrachialis and associated muscles. The coracobrachialis is also utilized when bringing the arm in and across the body as with a golf swing or a pitching motion in fast-pitch softball. Movements that involve pulling down and in toward the body, weight-bearing activities on the arms, and activities such as climbing, gymnastics rings, parallel bars, and pull-ups involve powerful shoulder adduction. The coracobrachialis, latissimus dorsi, teres major, pectoralis major, and long head of the triceps brachii all work together to adduct the shoulder. This motion is opposed or controlled by the posterior deltoid, latissimus dorsi, teres major, and lower fibers of the pectoralis major. Shoulder flexion occurs during daily activities like lifting, pushing, and reaching. The coracobrachialis works strongly with the anterior deltoid, upper fibers of the pectoralis major, and biceps brachii to flex the shoulder. This landmark mirrors the insertion of the deltoid, located on the lateral shaft of the humerus at the deltoid tuberosity. Its parallel muscle fibers run deep to the pectoralis major and anterior deltoid, extending about halfway down the humerus before inserting on the medial shaft. It originates on the coracoid process, along with the pectoralis minor and the short head of the biceps brachii. The coracobrachialis is a long, thin muscle that lies deep on the medial arm between the biceps and triceps brachii. Massage and Bodywork Magazine for the Visually Impaired - Coracobrachialis Back to Massage and Bodywork Issue List May/June 2013 Issue Back to May/June 2013 Article ListĬoracobrachialis By Christy Cael