Shoulder Anatomy
Chart information from: (Body Smart, n.d.)
(Netter, 2011, p.411)
Bursa: Sacs located at friction points (Thomas, L. (September 9, 2013) Lecture 1: Orientation to Musculoskeletal Ultrasound) In the shoulder it includes:.
1 Subacromial: coracoacromial arch-suprascapular muscle
2 Subdeltoid: deltoid muscle-capsule
3 Subcoracoid :subscapularis-coracoid
4 Subscapular: subscapularis tendon-scapular neck
(Netter,2011,p.296)
Function: allows musculoskeletal structures to move (Thomas, L. (September 9, 2013)Lecture 1: Orientation to Musculoskeletal Ultrasound).
("Shoulder Bursitis (Bursitis of the Shoulder)", n.d.)
1 Subacromial: coracoacromial arch-suprascapular muscle
2 Subdeltoid: deltoid muscle-capsule
3 Subcoracoid :subscapularis-coracoid
4 Subscapular: subscapularis tendon-scapular neck
(Netter,2011,p.296)
Function: allows musculoskeletal structures to move (Thomas, L. (September 9, 2013)Lecture 1: Orientation to Musculoskeletal Ultrasound).
("Shoulder Bursitis (Bursitis of the Shoulder)", n.d.)
Clavicle- articulates with the with the acromion process(laterally), and with the manubrium of the sternum(medially) (Seeley et al., 2011, p. 233). Acts like a lever arm to helps support and maintain the scapula and humerus position. (Body Smart, n.d.)
(Netter, 2011, p.406)
Humerus- articulates proximally with the scapula at the glenoid fossa and distally the capitulum with the radius (lateral) and the trochlea with the ulna (medial) (Seeley et al., 2011, p.233)
(Netter, 2011, p.407)
(Netter, 2011, p.407)
Scapula: Glenoid cavity articulates with the head of the humerus. The anterior surface articulates with ribs and the acromion with the clavicle. In the images red represents origins, and blue insertions.
Anterior View
Anterior View
Posterior View
(Netter, 2011, p.407-408)
(Netter, 2011, p.407-408)
Joint: The glenohumeral joint is a ball-and-socket joint it enables the arm to flex, extend, abduct and adduct, as well as move in a circular motion.
The A-C joint acts as a pivot point for the scapula and the thoracic vertebrae, which allows for the arm to be raised. The coracoclavicular ligaments and the acromioclavicular ligament support the A-C joint.(Edell, 2009)
The A-C joint acts as a pivot point for the scapula and the thoracic vertebrae, which allows for the arm to be raised. The coracoclavicular ligaments and the acromioclavicular ligament support the A-C joint.(Edell, 2009)