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kenis_exam2

Rutgers NeuroKenis Exam 2

QuestionAnswer
Prof. Chris D'Andrea
Joints of the Shoulder Girdle Sternoclavicular, Acromioclavicular, Scapulothoracic, Glenohumeral
Bones of the Should Girdle Clavicle, Scapula
Sternoclavicular Joint Large end of the Clavicle articulating with the small surface on the sternum
Clavicle Functions (1)muscular attachment (2)barrier to protect understructures (3)strut to stabilize shoulder (4)prevents medial displacement (5)prevents inferior migration of shoulder girdle
The only point of skeletal attachment of the upper extremity to the trunk Sternoclavicular Joint
3 ligaments that reinforce the Sternoclavicular joint (1) Interclavicular (2)Costoclavicular (3) Sternoclavicular
Factors that Reinforce Sternoclavicular Joint Reinforced by strong subclavius, joint capsule
Purpose of Sternoclavicular Joint Capsule helps to stop dislocation and disruption
Degrees of Freedom of Sternoclavicular Joint 3 degrees, (1) Superior/Inferior (2)Anterior/Posterior (3)Rotation
Motion that Superior/Inferior Freedom allows Elevation and Depresstion, 30-40 degrees ROM
Motion that Anterior/Posterior Freedom allows Protraction and Retraction, 40-50 degrees ROM
Motion that Rotation Freedom allows Posterior and Anterior Rotation, 40-50 degrees ROM
Acromioclavicular Joint A small gliding synovial Joint at a size of 9-19 mm in mots adults, where most of the scapula/clavicle movements occur
Where the clavicle is connected to the scapula at its distal end Acromioclavicular Joint
Ligaments of the Acromioclavicular Joint Acromioclavicular Ligament, Coracoacromial Ligament, Coracoclavicular Ligament (Trapezoid/conoid)
Coracoclavicular Lig. Assists with Scapular movements by serving as an axis of rotation and providing substantial support in movements that require large ROM, protects underlying structures, limits excessive movement of humeral head
Scapulothoracic Joint no bone to bone connection, physiological joint. 2 muscles (serratus ant. and Subscapularis)
How many muscles attach to or originate on the scapula? 17 muscles
Scapula large flat triangle bone composed of 5 thick ridges
Scapulothoracic Joint no bone to bone connection, physiological joint. 2 muscles (serratus ant. and Subscapularis)
How many muscles attach to or originate on the scapula? 17 muscles
Surfaces of Scapula Infraspinous fossa, Supraspinous fossa
Scapula large flat triangle bone composed of 5 thick ridges
What Motion does the scapula assist with? Increases the ROM of the shoulder past the 120 degrees that you get solely from the Glenohumeral joint
5 ridges on scapula glenoid, spine, medial border, lateral border, coracoid process
Key Bony landmarks of the Scapula Manubrium, clavicle, coracoid process, acromion process,Glenoid Fossa, lateral border, inferior border, medial border
Surfaces of Scapula Infraspinous fossa, Supraspinous fossa
Scapular Movements Abduction, Adduction, Elevation, depression, Upward and Downward Rotation
What Motion does the scapula assist with? Increases the ROM of the shoulder past the 120 degrees that you get solely from the Glenohumeral joint
What is scapular movement dependent on dependent on the movement and position of the clavicle
Key Bony landmarks of the Scapula Manubrium, clavicle, coracoid process, acromion process,Glenoid Fossa, lateral border, inferior border, medial border
Scapular Movements Abduction, Adduction, Elevation, depression, Upward and Downward Rotation
What is scapular movement dependent on dependent on the movement and position of the clavicle