Shoulder Problems Flashcards

1
Q

what are the rotator cuff muscles

A

supraspinatus
infraspinatus
teres minor
subscapularis

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2
Q

what is the function of supraspinatus ?

what nerve supplies it ?

A

supraspinatus initiates arm abduction (before deltoid takes over)
innervated by suprascapular nerve

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3
Q

what is the function of infraspinatus ?

what nerve supplies it ?

A

infraspinatus laterally rotates arm

innervated by suprascapular nerve

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4
Q

what is the function of teres minor ?

what nerve supplies it ?

A

teres minor adducts + laterally rotates arm

innervated by axillary nerve

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5
Q

what is the function of subscapularis ?

what nerve supplies it ?

A

subscapularis adducts + rotates arm medially

innervated by subscapular nerve

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6
Q

which rotator cuff muscle is most commonly injured

how does this present

A

supraspinatus

  • painful to initiate abduction
  • arm can be passively abducted past 60 degrees
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7
Q

what is subacromial impingement

A

‘painful arc’ syndrome

  • painful abduction between 60- 120 degrees
  • tenderness over anterior acromion
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8
Q

what is adhesive capsulitis ?

how does it present ?

A

‘frozen shoulder’

  • shoulder pain on both active + passive movement
  • external rotation is most affected
  • most common in females
  • can last 6 months - 2 years
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9
Q

what condition is adhesive capsulitis associated with

A

diabetes

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