Shoulder Anatomy Posterior
Pulls raises and adducts the scapula. Posterior shoulder the following video will walk you through the six steps to dissecting the posterior shoulder.
Anatomy Musculoskeletal Ultrasonography
The clavicle collarbone meets the acromion in the acromioclavicular joint.
Shoulder anatomy posterior. On the anterior side of the shoulder the coracobrachialis serratus anterior pectoralis major and pectoralis minor muscles work as a group to flex and adduct the scapula and humerus anteriorly toward the sternum. In human anatomy the shoulder joint comprises the part of the body where the humerus attaches to the scapula the head sitting in the glenoid cavity. The shoulder joint ligaments shown are the acromioclavicular ligament coracoclavicular ligament the superior transverse scapular ligament and the joint capsule or glenohumeral ligaments.
Nerves and blood vessels supply the muscles and bones of the shoulder. The acromion is a bony projection off the scapula. Nerves carry signals from the brain to the muscles to move the shoulder and carries signals from the muscles back to the brain about pain pressure and temperature.
Trapezius rotates the scapula raises the arm. Acute posterior shoulder dislocations are less common than anterior dislocations but more commonly missed 50 of traumatic posterior dislocations seen in the emergency department are undiagnosed. The shoulder is the group of structures in the region of the joint.
Boney structures shown are the acromion of the scapula the clavicle and the humerus. Posterior shoulder instability dislocation. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and socket.
The shoulder complex is composed of many different tissue types and it is the connective tissue that provides the supportive framework for the shoulders many functions. Other important bones in the shoulder include. The different types of connective tissues in the shoulder are bone articular cartilage ligaments joint capsules and bursa see gross anatomy.
Adducts and rotates the arm medially. Pulls rhomboideus major raises and adducts the scapula. There is a dissection assistance pdf file that you can use to assist you in your lab preparation.
Epidemiology incidence 2 to 5 of all unstable shoulders. The latissimus dorsi and teres major on the posterior side extend and adduct the arm towards the vertebrae of the back. Rotates the scapula raises the arm.
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