Musculoskeletal UE Flashcards

1
Q

Shoulder complex is comprised of

A

SC, AC (prevents humerus from upward displacement & holds scapula with clavicle), GH (ant, post, joint capsule, labrum & long head of bicep), Scapulothoracic (pseudo joint)

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2
Q

When the GH joint is dislocated (forward), the labrum (anterior/inferior portion) is torn away from the fossa. The pathology is coined what?

A

Bankart Lesion

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3
Q

Shoulder flexion or abduction comes from what structures (and how much)?

A

GH joint (120deg) & scapulothoracic (60deg)

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4
Q

Name structures that help facilitate upward rotation of scapula during arm elevation

A

Traps, serratus anterior

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5
Q

Name structures that help facilitate downward rotation of scapula during arm extension

A

Rhomboids, levator, pec minor

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6
Q

Name structures that help facilitate scapula protraction

A

serratus ant & pec minor

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7
Q

Name structures that help facilitate scapula retraction

A

rhomboids, mid & low traps

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8
Q

What are the open & closed pack positions for the shoulder?

A
Open = full abd w/ ext rot
Closed = 45deg abd 30deg horz add in scap plane
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9
Q

What is the GH capsular patterns?

A

Ext rot > (more restricted) abd > int rot

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10
Q

Ischemia of the deep flexor muscles in the forearm can cause this type of contracture, permanently shortening the involved muscles

A

Volkmann’s

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11
Q

FOOSH can result in a fracture of the distal radius or commonly referred to as this?

A

Colles’ fracture

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12
Q

What’s the most active muscle in grasping objects?

A

ECRB

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13
Q

What is the action, spinal innervation and nerve supply of the infraspinatus?

A
  • horizontal abduction, abduction, ER
  • suprascapular nerve
  • C5, C6 (brachial plexus trunk)
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14
Q

What is the action, spinal innervation and nerve supply of the subscapularis?

A
  • abduction, adduction (w/arm at side IR)
  • subscapular nerve
  • C5, C6 (posterior cord)
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15
Q

What is the action, spinal innervation and nerve supply of the supraspinatus?

A
  • abduction
  • suprascapular nerve
  • C5, C6
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16
Q

What is the action, spinal innervation and nerve supply of the teres minor?

A
  • extension, horizontal abduction, adduction, ER
  • axillary nerve
  • C5, C6 (posterior cord)