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Kin Ch 9
Joints of the Upper Extremity
Question | Answer |
---|---|
How many joints are in the shoulder complex? | Four. SC, AC, ScC, GH |
Which joint is the master joint and why? | Sternoclavicular. Orients the position of the scapula. |
Fine tune adjustments of scapular movement occurs at what joint? | Acromioclavicular |
What is scapulohumeral rhythm? | A coupling of shoulder girdle movement with arm movement. |
What joint are we referring to when we say shoulder joint? | Glenohumeral. |
Where is the glenohumeral joint located? | Glenoid fossa and the head of the humerus. |
What major motions are allowed at the GH joint? | Flexion/extension, adduction/abduction, lateral and medial rotation. |
When is the GH joint in its closed-packed position? | Lateral rotation and abduction. |
What structure provides stability to the GH joint? | The rotator cuff group of muscles. |
What are the structural and functional classifications of the GH joint? | Synovial, ball & socket, diarthrotic, triaxial. |