Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

USMLE - Metabolism Flashcards > MSK Nerves and Injuries > Flashcards

MSK Nerves and Injuries Flashcards

You may prefer our related Brainscape-certified flashcards:
USMLE® Step 1 flashcards
1
Q

Abnormal passive abduction of knee (valgus stress)

A

MCL Injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Abnormal passive adduction of knee (varus stress)

A

LCL injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pain on external rotation of knee

A

Medial meniscus injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pain on internal rotation of knee

A

Lateral meniscus injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Site of pudendal nerve block during delivery

A

Ischial spine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Location of appendix

A

2/3 of distance between umbilicus and ASIS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Site of lumbar puncture

A

Iliac crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Rotator Cuff Muscles (4) + Main innervation

A

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis; innervated by C5-C6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Supraspinatus (nerve + function)

A

Innervated by Suprascapular nerve; abducts arm, most common rotator cuff injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Infraspinatus (nerve + function)

A

Innervated by Suprascapular nerve; laterally rotates arm; pitching injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Teres minor (nerve + function)

A

Innervated by Axillary nerve; Adducts and laterally rotates arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Subscapularis (nerve + function)

A

Innervated by Subscapular nerve, medially rotates and adducts arm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Scaphoid

A

Most commonly fractured carpal bone, prone to avascular necrosis, palpated in anatomical snuff box

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Lunate

A

Carpal bone, dislocation can cause acute carpal tunnel syndrome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Hook of hamate (clinical significance)

A

Falling on outstretched hand can cause ulnar nerve injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Guyon canal syndrome

A

Compression of ulnar nerve (seen in cyclists from pressure from handlebars)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Erb palsy (Waiter’s tip)

A

Injury of upper trunk (C5-C6 roots); due to lateral track on neck during delivery (infants) or trauma (adults); Injury to Deltoid/supraspinatus (no abduction, arm hangs by side), Infraspinatus (no lateral rotation, arm medially rotated), Biceps brachii (no flexion/supination, arm hangs extended and pronated).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Klumpke Palsy

A

Claw hand; Injury of lower trunk (C8-T1 roots); due to upward force on arm during delivery (infants) or trauma like grabbing a tree branch to break a fall (adults); Injury to intrinsic and muscles, lumbricals, thenar, hypothenar.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Thoracic Outlet Syndrome

A

Compression of lower trunk and subclavian vessels; caused by cervical rib injury/Pancoast tumor, Muscle deficit same as Klumpke palsy (atrophy of intrinsic hand muscles, ischemia, pain, and edema due to vascular compression)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Winged Scapula

A

Lesion of long thoracic nerve, due to Axillary Node dissection after mastectomy or stab wounds, Injury to Serratus Anterior, causes inability to anchor scapula to thoracic cage, cannot abduct arm above horizontal position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Deltoid (innervation)

A

Axillary nerve

22
Q

Rhomboid (innervation)

A

Dorsal scapular nerve

23
Q

Teres Major (innervation)

A

Subscapular nerve

24
Q

Fractured surgical head of humerus, anterior dislocation of humerus.

A

Axillary (C5-C6) nerve injury

25
Q

Flattened deltoid,teres minor. Loss of arm abduction at shoulder, Loss of sensation over deltoid muscle and lateral arm

A

Axillary (C5-C6) nerve injury

26
Q

Upper trunk compression (separation of neck and shoulder)

A

Musculocutaneous nerve injury

27
Q

Loss of forearm flexion and supination/ Loss of sensation over lateral forearm

A

Musculocutaneous nerve injury

28
Q

Midshift fracture of humerus/compression of axilla (due to crutches or sleeping with arm over chair, Saturday night palsy)

A

Radial (C5-T1) nerve injury.

29
Q

Wrist drop: loss of elbow, wrist, finger extension, decreased grip strength, loss of sensation over posterior arm/forearm and dorsal hand

A

Radial (C5-T1) nerve injury

30
Q

Supracondylar fracture of humerus (proximal lesion)

A

Median (C5-T1) nerve injury

31
Q

Carpal tunnel syndrome and wrist laceration (distal lesion)

A

Medial (C5-T1) nerve injury

32
Q

Ape hand or Pope’s blessing, loss of wrist and lateral finger flesion, loss of sensation over thenar eminence and dorsal and palmar aspects of hand, Tinnel sign

A

Medial (C5-T1) nerve injury

33
Q

Fracture of medial epicondyle of humerus (funny bone)

A

Ulnar (C8-T1) nerve injury

34
Q

Fractured hook of hamate

A

Ulnar (C8-T1) nerve injury

35
Q

Radial deviation of wrist upon flexion, Loss of flexion of wrist and medial fingers, abduction and adduction of fingers, Loss of sensation over medial part of hand

A

Ulnar (C8-T1) nerve injury

36
Q

Superficial laceration of palm

A

Recurrent branch of median nerve (C5-T1)

37
Q

Loss of thenar muscle group, opposition abduction, and flexion of thumb

A

Recurrent branch of median nerve (C5-T1)

38
Q

Atrophy of thenar eminence

A

Median nerve lesion

39
Q

Atrophy of hypothenar eminence

A

Ulnar nerve lesion

40
Q

Dorsal interosseous muscles

A

Abduct the fingers

41
Q

Palmar interosseus muscles

A

Adduct the fingers

42
Q

Lumbrical muscles

A

Flex at the MCP joint, extend PIP and DIP joints

43
Q

Pelvic surgery, decreased thigh sensation (medial) and decreased adduction

A

Obturator (L2-L4 injury)

44
Q

Pelvic fracture, loss of patellar reflex, decreased thigh flexion and leg extension, decreased sensation on anterior thigh

A

Femoral (L2-L4 injury)

45
Q

Trauma or compression of lateral aspect of leg, fibular neck fracture

A

Common peroneal (L4-S2 injury)

46
Q

Foot drop-inverted and plantarflexed at rest, loss of eversion and dorsiflexion, loss of sensation on dorsum of foot

A

Common peroneal (L4-S2 injury)

47
Q

Knee trauma, Baker cyst, tarsal tunnel syndrome

A

Tibial (L4-S3 injury)

48
Q

Inability to curl toes and loss of sensation on sole of foot. Foot everted at rest with loss of inversion and plantarflexion.

A

Tibial (L4-S3 injury)

49
Q

Trendelenburg sign/gait; pelvis tilts, Lesion is contralateral to side that drops, ilsilateral to extremity on which patient stands.

A

Superior Gluteal (L4-S1 injury) –> due to posterior hip dislocation, polio

50
Q

Difficulty climbing stairs, rising from seated position. Due to posterior hip dislocation

A

Inferior gluteal (L5-S2 injury.

51
Q

PED and TIP

A

Peroneal everts and dorsiflexes (if injured, foot dropPED). Tibial inverts and plantarflexes (if injured, can’t stand on TIPtoes).

52
Q

Sciatic nerve (L4-S3)

A

Posterior thigh

USMLE - Metabolism Flashcards (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions