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AIF R42
Functional Anatomy of the Shoulder: Part 1
Question | Answer |
---|---|
The shoulder complex comprises how many major joints? | 4 |
What does SC stand for? | Sternoclavicular joint |
What does AC stand for? | Acromioclavicular joint |
Full range of motion at the GH joint is dependent on what? | Movement occurring at the other 3 joints |
Which joint is considered a pseudo articulation? | Scapulothoracic joint |
List the 5 movements that occur at the SC joint | Elevation, Depression, Protraction, Retraction, Rotation |
What are the primary motions of the AC joint? | Upward rotation, Downward rotation |
All movements that occur between the scapula and thorax are a result of? | The cooperation between the SC and AC joints |
What are the three posterior muscles that stabilise the ST joint? | Trapezius, Rhomboids, Levator Scapulae |
What type of joint is the GH joint? | Multiaxial ball and socket |
What is gained at the GH joint at the expense of stability? | Mobility |
What is the first reason the GH joint is not fully congruent? | The head of the humerus articulates with the shallow glenoid fossa of the scapula |