Rotates the scapula raises the arm. Pulls rhomboideus major raises and adducts the scapula.
Functional Anatomy Of Shoulder Joint Ppt Video Online Download
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.
Shoulder anatomy posterior. The latissimus dorsi and teres major on the posterior side extend and adduct the arm towards the vertebrae of the back. 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. Pulls raises and adducts the scapula.
Trapezius rotates the scapula raises the arm. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and socket. Posterior shoulder the following video will walk you through the six steps to dissecting the posterior shoulder.
Posterior shoulder instability dislocation. Epidemiology incidence 2 to 5 of all unstable shoulders. 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 clavicle collarbone meets the acromion in the acromioclavicular joint. The shoulder is the group of structures in the region of the joint.
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. 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 acromion is a bony projection off the scapula.
There is a dissection assistance pdf file that you can use to assist you in your lab preparation. 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.
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. Boney structures shown are the acromion of the scapula the clavicle and the humerus. Other important bones in the shoulder include.
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