pathophys of upper extremity Flashcards

1
Q

What is contained in the anterior compartment of the upper arm

A

Flexor
Musculocutaneous nerve
bicep brachii (flexion, supination)
Brachialis

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2
Q

What are the compartments of the upper arm separated by

A

fascia

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3
Q

What is contained in the posterior compartment of the upper arm

A

Extensor
Contains radial nerve
tricep

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4
Q

What symptoms are associated with brachial plexopathy

A

Weakness
pain
sensory
*all in the upper arm

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5
Q

What are some causes of brachial plexopathy

A

Trauma
TOS
Tumor invasion
Post operative complication (sternotomy)
Radiation

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6
Q

Where are upper brachial plexus lesions seen

A

C5, C6

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7
Q

What causes an upper brachial plexus lesion

A

head being pulled to one side with shoulder depression
-trauma
-difficult delivery
*traction or tearing of the nerve fibers

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8
Q

What is the result of an upper brachial plexus injury

A

Paralysis of
-supraspinatus
-infraspinatus
-biceps
-brachialis
-coracobrachialis
-deltoid

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9
Q

Where are lower brachial plexus lesions seen

A

C8, T1

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10
Q

What is the cause of a lower brachial plexus injury

A

Falling and catching yourself causing a tearing of the nerve

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11
Q

Which nerves are involved with a lower brachial plexus injury

A

Median and ulnar nerve -> affects functionality of the hand

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12
Q

What are the different types of brachial plexopathy

A

Avulsion
stretch
rupture

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13
Q

What is important about the surgical neck of the humerus

A

Where the joint capsule attaches

vascular supply for the humeral head

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14
Q

Where does the subscapularis insert

A

Lesser tuberosity

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15
Q

What is the major complication that can arise from a fracture of the surgical neck of the humerus

A

AVN of humeral head

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16
Q

Which arteries could be injured with a supracondylar fracture of the distal humerus

A

radial, ulnar, or brachial artery

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17
Q

What stabilizes the shoulder

A

Labrum
Rotator cuff
Glenohumeral ligaments

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18
Q

If there is an injury to the radial artery with a shoulder dislocation, what effects might a patient experience

A

Weakness and difficulty with extension of the wrist and fingers

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19
Q

What is the purpose of the labrum

A

Fibrocartilaginous joint that deepens the glenoid fossa and aids in stability

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20
Q

What type of labral tear is seen with dislocations and bankers lesions

A

Inferior

21
Q

What type of labral tear is associated with SLAP tears

A

Superior

22
Q

What is seen with stage 1 impingement syndrome

A

Edema and hemorrhage

23
Q

What is seen with stage 2 impingement syndrome

A

Fibrosis and tendonitis

24
Q

What is seen with stage 3 impingement syndrome

A

Rotator cuff tear and/or bicep rupture

25
Q

Which part of the rotator cuff is generally injured in trauma or chronic degenerative tearing

A

Supraspinatus, infraspinatus, teres minor

26
Q

How are rotator cuff tears classified

A

By size
-small 0-1
-medium 1-3
-large 3-5

27
Q

What causes frozen shoulder

A

Increased fibroblastic activity causing the joint capsule to become thickened and fibrotic

28
Q

How soon after surgery is PT required for adhesive capsulitis

A

Within a day or it will start to freeze again

29
Q

Where does the bicep insert

A

Radial tuberosity

30
Q

What movement does the long head of the bicep control

A

assists with abduction and internal rotation

31
Q

What movement does the short head of the bicep control

A

Adduction (to the coracoid)

32
Q

When both heads of the bicep fire together, what movement do they control

A

elbow flexion and supination

33
Q

Where is the pain the greatest with bicep tendonitis

A

Bicepital groove

34
Q

What does a SLAP tear stand for

A

Superior labrum, anterior to posterior

35
Q

What part of the bicep is effected with a bicep tendon rupture

A

Long head at the bicipital groove

36
Q

What type of bicep tendon rupture is most significant

A

distal

37
Q

What movement does the flexor carpi radials allow for

A

Flexion and abduction of the wrist

38
Q

What movement doesn’t the flexor carpi ulnaris allow for

A

Flexion and adduction of the wrist

39
Q

What muscle only flexes the wrist

A

Palmaris longus

40
Q

Which muscle flexes the wrist and middle phalanges from finger 2-5

A

Flexor digitorum superficialis

41
Q

Which muscle extends and adducts the wrist

A

Extensor carpi ulnaris

42
Q

Which muscle extends the wrist and abducts the hand

A

Extensor carpi radialis

43
Q

What is the difference between intrinsic and extrinsic muscles of the hand

A

Intrinsic are within the hand
extrinsic come from forearm

44
Q

What is a side effect of medial epicondylitis

A

decreased grip strength

45
Q

What causes dupuytrens contracture

A

Proliferative disorder of myofibroblasts that leads to fibrosis of palmar fascia

46
Q

What is the progression of dupuytrens contracture

A

Starts as nodule and progresses to for cords that pull the MCP and PIP into flexion

47
Q

Overgrowth of fibrocartilage that causes narrowing of the first annular pulley passage of the hand is descriptive of which pathology

A

trigger finger

48
Q

What is a contracture

A

Chronic, progressive loss of joint ROM secondary to tightening of non-bony tissue

49
Q

What is contracture typically due to

A

Immobilization