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KH 2220 Laura Abbott, MS, LMT

KH 2220 Laura Abbott, MS, LMT. Day 15 Shoulder Muscles. Rotator Cuff. SITS muscles S = Supraspinatus I = Infraspinatus T = Teres minor S = Subscapularis. Rotator Cuff Muscles. Supraspinatus O: supraspinous fossa I: greater tuberosity

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KH 2220 Laura Abbott, MS, LMT

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  1. KH 2220Laura Abbott, MS, LMT Day 15 Shoulder Muscles

  2. Rotator Cuff • SITS muscles • S = Supraspinatus • I = Infraspinatus • T = Teres minor • S = Subscapularis

  3. Rotator Cuff Muscles Supraspinatus O: supraspinous fossa I: greater tuberosity A: Abducts shoulder to about 45 degrees, stabilize head of humerus in glenoid cavity

  4. Rotator Cuff Muscles Infraspinatus O: infraspinous fossa I: greater tuberosity A: laterally rotates, adducts, extends, horizontally abducts shoulder, and stabilizes head of humerus in glenoid fossa

  5. Rotator Cuff Muscles Teres Minor O: superior lateral border (superior to major) I: greater tuberosity A: laterally rotates, adducts, extends, horizontally abducts shoulder, and stabilizes head of humerus in glenoid fossa

  6. Rotator Cuff Muscles Subscapularis O: subscapular fossa I: lesser tuberosity A: internal rotation, stabilizes the head of humerus in glenoid fossa.

  7. LIPS L = Latissimus Dorsi I = Internal Rotation P = Pec Major S = Subscapularis EXIT EX = EXternal rotation I = Infraspinatus T = Teres minor Acronyms

  8. Deltoid O: anterior – outer 1/3 of clavical middle – boarder of acromion posterior – scapular spine I: deltoid tuberosity A: ant. –shoulder flexion, medially rotates, and horizontally adducts shoulder mid. – shoulder Abduction post. – shoulder extension, lateral rotation, and horizontal abduction

  9. Muscles Teres Major O: inferior angle of scapula and lower ½ of lateral border of scapula I: intertubercle groove A: Adduction, some internal rotation, shoulder extension

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