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Questions and Answers
Which muscles are categorized as elevators of the scapulothoracic joint?
Which muscles are categorized as elevators of the scapulothoracic joint?
- Deltoids, serratus anterior, and supraspinatus
- Upper trapezius, levator scapulae, and rhomboids (correct)
- Latissimus dorsi, teres major, and subscapularis
- Infraspinatus, teres minor, and pectoralis minor
What can happen if there is reduced muscular support of the shoulder girdle?
What can happen if there is reduced muscular support of the shoulder girdle?
- Improved range of motion
- Increased strength
- Damaging stress on other structures (correct)
- Decreased pain
How does abnormal scapular posture affect the shoulder complex?
How does abnormal scapular posture affect the shoulder complex?
- It improves biomechanics
- It has no effect
- It decreases range of motion
- It affects biomechanics negatively (correct)
Which muscles perform depression of the scapulothoracic joint?
Which muscles perform depression of the scapulothoracic joint?
Which muscle stabilizes the SC joint?
Which muscle stabilizes the SC joint?
How does the latissimus dorsi depress the shoulder girdle?
How does the latissimus dorsi depress the shoulder girdle?
What can depressor muscles do for the upper extremity?
What can depressor muscles do for the upper extremity?
Who can benefit from scapulothoracic depressors?
Who can benefit from scapulothoracic depressors?
Why is scapulothoracic posture analysis important?
Why is scapulothoracic posture analysis important?
Which muscles are NOT categorized as depressors of the scapulothoracic joint?
Which muscles are NOT categorized as depressors of the scapulothoracic joint?
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Study Notes
- Muscles of the scapulothoracic joint are categorized by their actions.
- Elevators include upper trapezius, levator scapulae, and rhomboids.
- Reduced muscular support of the shoulder girdle can cause damaging stress on other structures.
- Abnormal scapular posture affects the biomechanics of the entire shoulder complex.
- Depression of the scapulothoracic joint is performed by lower trapezius, latissimus dorsi, pectoralis minor, and subclavius.
- The subclavius muscle stabilizes the SC joint.
- The latissimus dorsi depresses the shoulder girdle indirectly.
- Depressor muscles can increase the overall functional length of the upper extremity.
- Scapulothoracic depressors are useful for persons with tetraplegia.
- Scapulothoracic posture analysis is important in shoulder clinical inspection.
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