Flashcards in Rotator cuff muscles Deck (20)
What is the origin and insertion of the supraspinatus?
supraspinous fossa to greater tubercle
what is the action of the Supraspinatus M.?
initiate abduction of arm from 0-15 degrees
What innervates the Spraspinatus M?
What is the origin insertion of infraspinatus?
infraspinous fossa to greater turbcle
What is the action of infraspinatus M?
main lateral rotator
What is the innervation of the infraspinatous M.?
What are the attachments of teres minor?
bottom part of infraspinous fossa to greater turbcle
What is the function of trees minor?
assist in infraspinatous lateral rotation
What is the innervation of the teres minor?
What is attachments of subscapularis M?
subscapular fossa to lesser turbcle
What is the function of subscapularis?
medial rotator of the arm
What nerves innervate subsacpularis?
upper and lower sub scapular
What are the rotator cup muscles?
what are the rotator cup muscles help with?
helps protects the glenoidhummeral joint from dislocating
how does the joint stops from popping out the glenoid fossa?
synovial fluid is water based forces pulling the head out is balanced by the negative pressure on the inside
What is a rotator cuff tear?
it is tearing of any of the rotator cuff muscles but the supraspinatous is most common
What is impingement syndrome?
raising the arm causes the greater turbucle to impinge the supraspinatous or biceps brachii long head tendon
What is the attachments of teres major M.
inferior part of the lateral border of scapula to interturbuclar groove (next to the lats)
not a rotator cuff muscle
What is the action of teres major?
medial rotation of arm
(sane as lats but not as strong)