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GH joint


Pectoralis Major: Upper Fibers O: Antromedial clavicle I: Lateral lip of intertrabecular grove A: internal rotation, horizonatal adduction, flexion
Pectoralis Major: Lower Fibers O: anterior sternum and costal cartilage of rib 1-6 I: Lateral lip of intertubercular groove A: Internal rotation, horizontal adduction
Latissimus Dorsi O: Posterior ilium, sacrum, spinous process of T7-L5 and ribs 10, 11, 12 I: medial intertubercular Groove A: Extension, Adduction, internal rotation
Deltoid: anterior fibers O: anterolateral clavicle I: deltoid tuberosity A: flexion, abduction, horizontal adduction
Deltoid: Middle Fibers O: Lateral acromion I: Deltoid tuberosity A: abduction
Deltoid: Posterior Fibers O: inferior edge of scapular spine I: Deltoid tuberosity A: horizontal abduction, abduction
Coracobrachialis O: coracoid process I: mid medial border of humeral shaft A: flexion, horizontal adduction
Teres Major O: Posterior medial border of scapula, superior to inferior angle I: Medial lip of intertubercular groove A: extension, adduction
Supraspinatus O: medial 2/3 of Supraspinatus fossa I: superior on greater tubercle A: abduction, scaption (V plane, not quite flexion, not quite abduction)
Infraspinatus O: medial Infraspinatus fossa I: posterior on greater tubercle A: external rotation, horizontal abduction (causes retraction but muscle does not cause retraction directly)
Teres Minor O: posterior lateral border of scapula I: posterior on greater tubercle A: external rotation, horizontal abduction
Subscapularis O: anterior subscapular fossa I: lesser tubercle A: Internal rotation
Created by: adalmadge
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