Shoulder Problems Flashcards
what are the rotator cuff muscles
supraspinatus
infraspinatus
teres minor
subscapularis
what is the function of supraspinatus ?
what nerve supplies it ?
supraspinatus initiates arm abduction (before deltoid takes over)
innervated by suprascapular nerve
what is the function of infraspinatus ?
what nerve supplies it ?
infraspinatus laterally rotates arm
innervated by suprascapular nerve
what is the function of teres minor ?
what nerve supplies it ?
teres minor adducts + laterally rotates arm
innervated by axillary nerve
what is the function of subscapularis ?
what nerve supplies it ?
subscapularis adducts + rotates arm medially
innervated by subscapular nerve
which rotator cuff muscle is most commonly injured
how does this present
supraspinatus
- painful to initiate abduction
- arm can be passively abducted past 60 degrees
what is subacromial impingement
‘painful arc’ syndrome
- painful abduction between 60- 120 degrees
- tenderness over anterior acromion
what is adhesive capsulitis ?
how does it present ?
‘frozen shoulder’
- shoulder pain on both active + passive movement
- external rotation is most affected
- most common in females
- can last 6 months - 2 years
what condition is adhesive capsulitis associated with
diabetes