The Shoulder and Pectoral Region 8.20 Flashcards
Primary Goal of Shoulder
Movement of hand and arm
Functions of the Pectoral Girdle
Interface Support Bone Shock absorber Protection of neurovascular structures
N419
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Functions of the clavicle
Muscle attachment Strut Mobile Weight transfer
Percent of fractures which involve the clavicle
8%
Functions of the Scapula
Surface for muscle attachment (17 in total) Firmly attach to clavicle
N414
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The shoulder joints
Acromioclavicular Dislocation
N412
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N415
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Location of humerus in “shoulder dislocation”
Down and forward
N413
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N417`
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Winged Scapula
The medial border of the scapula moves laterally and posterior creating a condition known as Winged Scapula
Winged Scapula is usually caused by injury to the Long Thoracic Nerve
Injury to the Trapezius muscle can also cause
scapular winging
Rotator Cuff Injuries
N418
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Trapezius (I/A)
Accessory nerve (CNXI)
Upper: Elevates and upward rotation of scapula
Middle:Retraction of scapula
Lower: Depress and upwardly rotatie scapula
Latissimus dorsi (I/A)
Thoracodorsal n. (C6-C8)
Extends, adducts, and medially rotates the humerus
Rhomboid major (I/A)
Dorsal scapular nerve (C5)
Adducts, retracts, and downwardly rotates scapula
Rhomboid minor
Dorsal scapular nerve (C5)
Adducts, retracts, and downwardly rotates scapula
Levator scapulae (I/A)
Dorsal scapular nerve (C5)
Elevates and downwardly rotates scapula
Pectoralis Major (I/A)
Pectoralis Minor (I/A)
Serratus Anterior (I/A)
Deltoid (I/A)
Teres major (I/A)
Teres minor (I/A)
Supraspinatus (I/A)
Infraspinatis (I/A)
Subscapularis (I/A)
