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GH joint
AOI
Question | Answer |
---|---|
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 |