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CABS MSK exam > Pectoral girdle pathophys > Flashcards

Pectoral girdle pathophys Flashcards

1
Q

What muscle is most likely to be injured in the pectoral girdle

A

Supraspinatus

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2
Q

What makes up the rotator cuff

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

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3
Q

What is the purpose of the scapula

A

Assist to anchor the upper extremities and help with ROM

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4
Q

What is the origin of the rotator cuff musculature

A

Scapula

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5
Q

What is the mechanism of action for a scapular fracture

A

High energy force
-MVC
-Fall from height
-FOOSH
-Non-accidental trauma

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6
Q

What are the complications of a scapular fx

A

Lung injury
brachial plexus injury
Thoracic cage injury
Shoulder girdle
Clavicular fx
Rib fx

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7
Q

How often to rib fractures occur with scapula fractures

A

64% of the time

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8
Q

What are some lung injuries that can occur with scapular fx

A

Pulmonary contusion
Pneumothorax

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9
Q

What are some structures that can have traumatic disruption with scapulothoracic dissociation

A

Subclavian artery
axillary artery
brachial plexus
AC separation

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10
Q

What happens with TOS

A

Compression of neuromuscular bundle

Mostly neurogenic (Venous>arterial)

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11
Q

What type of joint is the AC joint

A

Plane joint
Synovial joint

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12
Q

What is a mechanism of action for a clavicular fracture

A

FOOSH
Fall directly on shoulder

*If distal fx.. generally associated with direct trauma

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13
Q

Where is the most common clavicular fx and why

A

mid shaft because its typically the weakest point

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14
Q

What are some complications with a clavicular fx

A

Compression of subclavian vein,
Subclavian artery, brachial plexus

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15
Q

What is the mechanism of action for an AC joint dislocation

A

Fall -> acromion gets pushed under distal clavicle

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16
Q

What are the three parts of the sternum from the top-down

A

Manubrium
body
xyohoid

17
Q

What is the purpose of the thoracic cage

A

Protection of lungs
pleura
trachea
esophagus
heart
diaphragm
liver
and kidney

18
Q

What type of bone are the ribs

A

flat bone

19
Q

Where does the head of the rib articulate

A

Thoracic spine

20
Q

What is the purpose of the costal groove

A

Allows for passage of the neuromuscular bundle

21
Q

What is a true rib

A

Attaches directly to the sternum via hyalin cartilage

22
Q

What is included in the neuromuscular bundle

A

Intercostal vein
Intercostal artery
intercostal nerve

23
Q

What is the most common bony injury in a chest trauma

A

Rib fractures

24
Q

Which ribs have a higher risk of underlying pathology when fractures

A

Upper ribs

25
Q

If a patient is splinting while breathing, what does it mean

A

They are having pain with respiration

26
Q

What is the MOA for the supraspinatus

A

Abduction

27
Q

What is the MOA for infraspinatus

A

External rotation

28
Q

What is the MOA for teres minor

A

External rotation

CABS MSK exam (9 decks)

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