10-13-09 - Muscles of the Shoulder Posterior Supraspinatus...

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Unformatted text preview: Muscles of the Shoulder Posterior Supraspinatus Infraspinatus Teres minor Subscapularis Reres major Latissimus dorsi Muscles of the Shoulder anterior Pectoralis major Deltoid Coracobrachialis Biceps brachii Muscles of the Shoulder Rotator Cuff Muscles Supraspinatus Infraspinatus Teres minor Subscapularis Muscles of the Shoulder Posterior Supraspinatus Rotator cuff muscle- Superior; on top O: supraspinatus fossa of scapula I: greater tubercle of humerus N: suprascapular Action o Stabilize glenohumerol joint - stabilizes head of the humerus into the glenoid fossa o Initiates abduction P non-palpable in well-developed people; PF in less well-developed people (with weak trapezius) C: rotator cuff muscle Codmans or pendulum exercises are performed with the arm dependent and 90 of shoulder flexion the position relaxes the supraspinatus lean on table use body to make arm move Muscles of the Shoulder Posterior Infraspinatus Rotator cuff muscle Posterior O: infraspinatus fossa of scapula I: greater tubercle of humerus N: suprascapular Action o Stabilize glenohumeral joint o External rotation of shoulder o Horizontal abduction of shoulder Muscles of the Shoulder Posterior Infraspinatus P: o R horizontal abduction o PF below the posterior deltoid to posterior axillary wall o PB supraspinatus (superior) and teres minor (inferior) C: Infraspinatus and teres minor are mostly merged and have same actions but different nerves; are considered together Muscles of the Shoulder Posterior Teres minor...
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10-13-09 - Muscles of the Shoulder Posterior Supraspinatus...

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