Rotatorenmanschette

The video tutorial provides an in-depth look at the rotator cuff muscles, including the supraspinatus, infraspinatus, teres minor, and subscapularis. It covers their anatomical locations, functions, and roles in shoulder stability and movement. The tutorial also discusses clinical cases like impingement syndrome and rotator cuff rupture, highlighting their causes and potential treatments.

What is the primary function of the rotator cuff in the shoulder joint?

• To extend the shoulder joint

• To initiate arm abduction

• To stabilize and center the humeral head

• To flex the shoulder joint

Which muscle is responsible for initiating the abduction of the upper arm?

• Subscapularis

• Infraspinatus

• Supraspinatus

• Terres Minor

Which nerve innervates the supraspinatus muscle?

• Axillary nerve

• Musculocutaneous nerve

• Suprascapular nerve

• Radial nerve

What is the primary action of the infraspinatus muscle?

• Adduction of the upper arm

• Abduction of the upper arm

• External rotation of the upper arm

• Internal rotation of the upper arm

Which muscle is the strongest external rotator in the shoulder joint?

• Subscapularis

• Infraspinatus

• Terres Minor

• Supraspinatus

Where does the terres minor muscle originate?

• Subscapular fossa

• Acromion

• Spina scapulae

• Lateral edge of the scapula

Which nerve innervates the terres minor muscle?

• Suprascapular nerve

• Axillary nerve

• Radial nerve

• Ulnar nerve

What is the unique function of the subscapularis muscle compared to other rotator cuff muscles?

• Abduction of the upper arm

• Adduction of the upper arm

• External rotation of the upper arm

• Internal rotation of the upper arm

What is the primary cause of impingement syndrome in the shoulder?

• Tear in the terres minor muscle

• Thickening of the supraspinatus tendon

• Dislocation of the shoulder joint

• Fracture of the humerus

What is a common treatment for a minor rotator cuff rupture?

• Surgical intervention

• Physical therapy

• Corticosteroid injections

• Complete rest