Shoulder joints Flashcards
What are the joints of the shoulder
- glenohumeral
- sternoclavicular
- acromioclavicular
- scapulothoracic
What landmarks make up the glenohumeral joint
head of the humerus and the glenoid cavity
What are the movements performed at the GH joint
- extension, flexion
- adduction, abduction
- internal and external rotation
- horizontal adduction and abduction
What are the ligaments that give the GH joint support
- superior GH ligament
- middle GH ligament
- inferior GH ligament
- coracohumeral ligament
- coracoacromial ligament
- transverse humeral ligament
What is the purpose of the superior GH ligaments
- limits inferior translation during adduction
- limits anterior translation during ER
What is the purpose of the middle GH ligament
- limits ER from 45-90 degrees during abduction
What is the purpose of the inferior GH ligament
- limits inferior translation
- anterior band limits ER
- posterior band limits IR
What is the purpose of the coracohumeral ligament
limits inferior translation and ER
What is the purpose of the coracoacromial ligament
limits superior translation
What is the purpose of the transverse humeral ligament
holds the biceps tendon in place (bicipital groove)
what landmarks make up the sternoclavicular joint
manubrium of the sternum and clavicle
What motions are preformed at the SC joint
elevation, depression
protraction, retraction
rotation
What are the ligaments that give the SC joint stability
- sternoclavicular ligament
- costoclavicular ligament
- interclavicular ligament
What is the purpose of the costoclavicular ligament
limits elevation of the clavicle
What landmarks make up the acromioclavicular joint
acromion process and the clavicle
