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UNIT 2 SHOULDER COMPLEX JOINT & LIGAMENTS
Unit 2 Shoulder Complex Joint & Ligaments Winter 2010 PTAP 125
20
Biology
Undergraduate 1
02/28/2010

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Term
JOINTS OF THE SHOULDER COMPLEX
Definition
sternoclavicular, acromioclavicular, glenohumeral, and scapulothoracic
Term
SUBACROMIAL (SUBDELTOID) BURSA
Definition
pads b/w the rotator cuff tendons and the humeral head
Term
STERNOCLAVICULAR JOINT
Definition
articulation b/w sternum and clavicle, contain a small fibrous disk
Term
LIGAMENTS THAT SUPPORT THE STERNOCLAVICULAR JOINT
Definition
sternoclavicular ligament, costoclavicular ligament, interclavicular ligament
Term
STERNOCLAVICULAR LIGAMENT
Definition
connects the clavicle to the sternum on both anterior and posterior surfaces; reinforces joint capsule
Term
COSTOCLAVICULAR LIGAMENT
Definition
connects the inferior surface of clavicle to the superior surface of the costal cartilage of rib 1; limits clavicular elevation
Term
INTERCLAVICULAR LIGAMENT
Definition
connects the sternal ends of both clavicles across the superior aspect of the manubrium; limits clavicular depression
Term
ACROMIOCLAVICULAR JOINT
Definition
articulation b/w the scapula and the clavicle
Term
LIGAMENTS THE SUPPORT THE ACROMIOCLAVICULAR JOINT
Definition
acromioclavicular ligament, coracoclavicular ligament, coracoacromial ligament
Term
ACROMIOCLAVICULAR LIGAMENT
Definition
connects the acromion to the clavicle; prevents the posterior dislocation of clavicle
Term
CORACOCLAVICULAR LIGAMENT
Definition
connects the coracoid to the inferior clavicle; prevents posterior motion of the scapula and limits scapular upward rotation
Term
CORACOACROMIAL LIGAMENT
Definition
connects two bony landmarks on the same bone: coracoids and acromion of the scapula; forms the coracoacromial arch to protect the rotator cuff tends and subacromial bursa from direct trauma from the acromion
Term
TWO PARTS OF THE CORACLAVICULAR LIGAMENT
Definition
trapezoid, conoid
Term
SCAPULOTHORACIC JOINT
Definition
articulation b/w scapula and rib cage
Term
SCAPULOHUMERAL RHYTHM
Definition
relationship b/w scapulothoracic joint and glenohumeral joint; work together is a 2:1 ratio
Term
GLENOHUMERAL JOINT
Definition
tri-axial, ball and socket, synovial; articulation b/w glenoid fossa and humeral head
Term
LIGAMENTS THAT SUPPORT THE GLENOHUMERAL JOINT
Definition
coracohumeral ligament, glenohumeral ligament, glenoid labrum
Term
CORACOHUMARAL LIGAMENT
Definition
connects the coracoids to greater tubercle
Term
GLENOHUMERAL LIGAMENT
Definition
pleated folds in the anterior joint capsule in the superior, middle, and inferior directions; reinforces the joint capsule
Term
GLENOID LABRUM
Definition
fibrocartilage that surrounds the rim of the glenoid fossa deepening the articular cavity
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