Rotator Cuff Flashcards
Describe the rotator cuff
muscles attach to humeral tubercles
strengthen shoulder joint capsule
stabilize + support
tendons of muscles are around shoulder joint
dislocations of humerus occur most commonly in which direction
downward
What are the SITS muscles
subscapularis
infraspinatus
teres minor
supraspinatus
What is the origin of the subscapularis
subscapular fossa
What is the insertion of the subscapularis
lesser tubercle of humerus
What are the functions of the subscapularis
medial rotation of arm @ GHJ
What nerve innervates the subscapularis
upper and lower subscapular nerves
What is the origin of the infraspinatus
infraspinous fossa of scapula
What is the insertion of the infraspinatus
middle facet of greater tubercle of humerus
What are the functions of the infraspinatus
lateral rotation of arm @ GHJ
What nerve innervates the infraspinatus
suprascapular nerve
What is the origin of the teres minor
superior lateral border of scapula
What is the insertion of the teres minor
inferior facet of greater tubercle of humerus
What are the functions of the teres minor
lateral rotation of arm @ GHJ
What nerve innervates teres minor
axillary nerve
