Kin 3304 Test 2 Shoulder.docx

Kin 3304 Test 2 Shoulder.docx - Review for Shoulder...

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Review for Shoulder Shoulder Shoulder girdle position itself to accommodate movement of the shoulder joint Bones of shoulder girdle 2 clavicles (most often broken in the body) that are classified as long bones 2 curves: Medial curvature is close to the sternum. Origin of pectoralis major and sternocleidomastoid Lateral curvature is close to acromion facet Origin at the deltoid and insertion at the trapezius. Scapula (shoulder blade) is classified as a flat bone Triangle shaped bone with defined borders Lateral Medial Superior Inferior, medial part is called inferior angle Landmarks of shoulder girdle Sternal end Acromial end Acromial facet articulates with scapula Subclavian groove: inferior surface near medial end that is the attachment point for the subclavius (muscle) and fascia. Landmarks of scapula Spine of scapula is the prominent ridge of the posterior aspect Insertion at the trapezius and deltoid Acromion process is the lateral expansion of the spine Articulates with the clavicle (at the acromial facet) Insertion at trapezius and deltoid Corocoid process Insertion at pectoralis minor and biceps brachii Glenoid fossa Forms socket of the shoulder joint and articulates with humerus Scapular Notch Suprascapular nerve passage Supraglenoid tubercle is the attachment site for the biceps brachii Shoulder joint Bones of shoulder joint Scapula Humerus (long bone) articulates with scapula and bones of forearm Landmarks Head (ball of shoulder joint) that articulates with scapula Greater and lesser tuberosities Immediately distal to the head Intertubercular groove between greater and lesser tuberosity provides passage for biceps brachii tendon
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Anatomical neck is found between neck and tuberosities Surgical neck is found below the tuberosities Movement of shoulder Girdle Elevation and depression Protraction and retraction Upward and downward rotation Movement of shoulder joint (ball and socket joint) Flexion and extension Abduction and adduction Internal and external rotation
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