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Related Flashcards
Cards In This Set
| Front | Back |
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Joints of Shoulder
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-sternoclavicular-acromioclavicular-glenohumeral-scapulothoracic
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Scapulothoracic JointCharacteristics and Movements
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-not a true joint-scapula attached to thorax by muscles-attached by clavicle to sternum-Movements: elevation/depression, protraction/retraction, upward/downward rotation
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Elevation/ Depression and Tipping
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-maintains contact with trunk-occurs about ML axis-some tipping normal-excessive tipping: inferior angle moves away from trunk (caused by weakness of stabilizers of scapula)
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Protraction (ABD) Retraction (ADD) and Winging
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-maintains trunk contact-occurs in vertical axis-excessive winging brings medial border (weakness due to serratus anterior)
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Scapular Rotation
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Upward (lateral)Downward (Medial)
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Sternoclavicular Joint Movements
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-elevation/depression-protraction/retraction-axial (longitudinal) rotation of the clavicle (with shoulder abd or flex, rotates posteriorly 40-50 degrees)
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Clavicular Elevation/ Depression, Protraction/retraction with scapular movements
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-elevation during scapular elevation or upward rotation-depression during scapular depression or downward rotation-protraction with scapular protraction-retraction with scapular retraction
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Clavicular axial rotation
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-rotation of clavicle along its longitudinal axis-with shoulder abduction/flexion, clavicle rotates 40-50 degrees posteriorly
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Tissues that stabilize the Acromioclavicular Joint
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-superior/inferior acromioclavicular ligaments-deltoid and upper trapezius-coracoclavicular ligaments: conoid and trapezoid-articular disc
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AC joint movements
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-upward/downward rotation-horizontal place rotational adjustments-sagittal place rotational adjustments
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Glenohumeral Joint
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-ball and socket-head of humerus and shallow glenoid fossa of scapular-deepened by glenoid labrum-mobile but unstable
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Tissues that stable GH joint
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-rotator cuff muscles-GH joint capsular ligaments (superior, inferior, middle)-coracohumeral ligament-long head of the biceps-glenoid labrum
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Coracoacromial Arch
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-"roof of GH joint"-acromion process of spine of scapula to coracoid process of scapula-coracoacromial ligament-area beneath speace is 1 cm with contents: supraspinatus muscle and tendon, subacromial bursa, long head of biceps, part of superior joint capsule
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Subacromial-Subdeltoid Bursa-Bursitis?
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-decreases friction between: coracoacromial arch (deltoid muscle and supraspinatus tendon)-bursitis: inflammation of the bursa
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GH Joint motion
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-flex/ext, abd/add, IR/ER-flex and abd resul;ts in upward rolling and downward gliding-otherwise impingement of head of humerus on coracoacromial arch would occur-ER helps increas ABD ROM
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