Upper Extremity Nerves and Deficits Flashcards Preview

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Flashcards in Upper Extremity Nerves and Deficits Deck (43):
1

"Wrist drop"

Radial nerve injury

2

How to injury the radial nerve

Fracture of the shaft of the humerus and "saturday night palsy"- compression of the radial nerve against the spiral groove of the humerus

3

Motor innervation of the radial nerve

BEST
Brachioradialis, Extensors of the arm and hand, Supinator, Triceps

4

Ape hand

median nerve: thumb cannot adduct

5

Hand of benediction:

cannot flex the first three fingers of the hand. Looks normal at rest (unlike the ulnar claw)

6

Ulnar claw deformity

cannot extend the 4th and 5th fingers. looks abnormal at rest

7

Carpal tunnel syndrome:

loss of sensation of the first 3.5 fingers

8

Pathology of musculocutaneous nerve injury :

decreased flexion and supination of forearm

9

Dislocation of shoulder or fx of surgical neck of the humerus damages which nerve:

Axillary

10

What artery runs with the axillary nerve?

Posterior circumflex artery

11

Winged scapula

Long thoracic

12

Long thoracic:

serratus anterior

13

Subscapular Nerve

infra and supraspinatus

14

Lateral pectoral

Pec major

15

Upper subscapular nerve

subscapularis

16

Thoracodorsal

latissmus dorsi

17

Lower subscapularis:

teres major

18

Musculocutaneous

C5-C7: biceps brachial coracobrachialis an main flexors of the arm and forearm

19

Axillary

C5-C6: Deltoid and teres minor

20

Radial

C5-T1: extensors of the arm and forearm, triceps

21

Median:

Pronators and thenor muscle of hand

22

Ulnar:

Inner osseous and hypothenar muscle

23

Erb Palsy

Lesion at the upper trunk causes complete of partial paralysis of UE. Results in waiters tip due to loss of abduction, lateral rotation, and flexion and supination

24

Klumpke palsy

Lesion of the lower trunk that results in atrophy of the interossi, thenar, hypothenar and loss of sensation to the medial hand and forearm

25

Lesion to radial nerve:

Wrist drop and loss of sensation to dorsal hand and posterior arm and forearm

26

Common ways to lesion radial nerve:

Midshaft fracture of the humerus and compression of the axilla

27

Lesion to ulnar nerve:

Ulnar claw on extension of hands, weak addict and abduction of the digits, hypothenar wasting

28

Lesion to median nerve:

On flexion cannot flex the 2nd and 3rd digits "hand of benediction" carpal tunnel syndrome. "ape hand"- cannot abduct the thumb

29

Lesion of musculocutaneous nerve

decreased flexion of forearm

30

Ways to damage the axillary nerve:

Dislocation of shoulder or fracture of the surgical neck of the humerus

31

How to lesion the femoral nerve

Pelvic fracture

32

Lesion of the femoral nerve

loss of leg flexion and extension (hip flexors) and loss of sensation to anterior leg
(L2-L4)

33

How to lesion the obturator nerve

Anterior hip dislocation

34

Lesion to obturator

Loss of leg adduction
L2-L4

35

How to lesion superior and inferior gluteal nerves

Posterior hip dislocation
(superior is deeper)
Superior L4-S1
Inferior L5-S2

36

Lesion to superior gluteal

Trendelberg gait. Lesion is ipsilateral to the side that the pt is standing on!

37

Lesion to inferior gluteal

difficulty climbing stairs (innervates the gluteus maximus)

38

How to lesion the sciatic nerve

disc compression

39

Lesion to sciatic nerve

Pain down the back of legs, difficulty with hip extension and knee flexion. (L4-S3). Straight leg test!

40

How to lesion the tibial nerve:

knee injury

41

Lesion to tibial nerve:

unable to curl toes or invert the foot. Loss of sensation to calf (rural nerve)

42

How to lesion the common fibular nerve

Compression of the lateral aspect of leg, leg crossing, fracture of he neck of fibula.

43

Lesions to common fibular

Foot drop (also caused by deep fibular nerve)