Brainscape's Knowledge GenomeTM

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


See full index

Upper Limb ~ Anatomy > Radial Nerve > Flashcards

Radial Nerve Flashcards

1
Q

Radial Nerve Formed in the

A

Axilla

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

Branches of Radial Nerve in the Axilla

A

Branches to Medial and Long Head of Triceps

In the Axilla

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

From Axilla, Radial nerve enters Posterior compartment of Arm by passing through

A

Lower Triangular Interval

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

In the Posterior Compartment of Arm, Radial nerve get accompanied by

A

Profunda brachii artery

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

In the Posterior Compartment of Arm Radial nerve passes through

A

Spiral Groove

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

Branches of Radial nerve in the posterior compartment of arm

A

Branches to Medial and Lateral head of Triceps

Branch to medial head also supplies Anconeus muscle

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

Injury at lower aspect of Spiral Groove;

Intact muscles -

Intact movements -

A

Intact muscles -

  • Triceps muscle
  • Anconeus muscle

Intact movements - extention of elbow

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

Action of Triceps

A

Triceps attached to Olecranon process of Ulna -

Extension of Elbow (assisted by Anconeus muscle)

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

Radial nerve in the lower part of arm present between

A

Brachialis and Brachioradialis

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

Radial Nerve Branches in Elbow

A

Motor Branches to -

Brachialis (hybrid muscle)
Brachioradialis
ECRL

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

Radial nerve below the Elbow Joint divides into

A

Superficial (sensory) Branch

Deep (motor) Branch

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

Deep (motor) branch of Radial Nerve is also known as

A

Posterior interosseous nerve

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

Posterior interosseous nerve reaches posterior compartment of forearm after piercing the

A

Supinator muscle

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

Posterior interosseous nerve supplies all the muscles of posterior compartment of forearm
Except;

A

Anconeus

Brachioradialis

ECRL - extensor carpi radialis longus

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

Low radial nerve palsy means

A

Injury to radial nerve -

Below the elbow before its division into superficial and deep

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

Low radial nerve palsy;

Intact muscles -

Intact movement -

A

Low radial nerve injury;

Intact muscles -

  • triceps
  • anconeus
  • brachialis
  • brachioradialis
  • ECRL

Intact movement -

  • extension of elbow
  • extension of wrist
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Why wrist drop is not seen in Low Radial Nerve Palsy

A

Because ECRL is intact

It supplied by Radial Nerve above the Elbow Joint

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

Function lost in Low Radial Nerve Palsy;

A

Loss of Extension of MetacarpoPhangeal Joint ~ deep branch affected

Sensory Loss ~ superficial branch affected

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

Posterior interosseous nerve palsy;

Normal action and Muscles intact

A

Extension of Elbow - Normal
(Triceps, Anconeus- Intact)

Extension of wrist - Normal
(ECRL-Intact)

Wrist drop not seen

No sensory loss

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

Posterior interosseous nerve palsy;

Lost function -

A

Extension of MCP Joint - Lost

Finger drop

(wrist drop not seen)

(no sensory loss)

21
Q

Superficial branch of radial nerve is passing under the cover of

A

Brachioradialis muscle

22
Q

Compression of Superficial branch of radial nerve during its course under brachioradialis results into

A

Wartenberg’s Syndrome

23
Q

C/F of Wartenberg’s Syndrome

A

Loss of sensation in lateral 3 1/2 digits

24
Q

Difference between Wartenberg Syndrome & Wartenberg Sign;

A

Wartenberg sign;

The little finger - unable to adduct towards ring finger

Due to Ulnar nerve injury - affects Palmar interosseous interossei

25
Q

Extensor tendons reach upto Distal Phalanx by

A

DDE - Dorsal Digital Expansion

26
Q

Dorsal Digital Expansion Trifurcates into

A

One medial band

Two lateral bands

27
Q

One medial band inserted to

Action -

A

One mecial band,

Crossing Interphalangeal joint posteriorly and inserted to Middle Phalanx

Action - Extension of Proximal IP Joint

28
Q

Two lateral bands inserted to

Action -

A

Two lateral bands unite and cross the Distal IP - Joint Posteriorly and inserted to distal phalanx

Action - Extension of Distal IP Joint

29
Q

Tendons attached to DDE

A

Lumbricals
Palmar interossei
Dorsal interossei

Are Wing tendons - attaches DDE like a wing

30
Q

Feature of Mallet Finger and is due to

A

Flexion of Distal IP - Joint;

Due to Lateral band avulsion results in Mallet Finger

31
Q

Distal IP-Joint Flexion + Hyperextended Proximal IP-Joint

Is _________

A

Swan - Neck Deformity

32
Q

Swan - Neck Deformity seen in

A

In Rheumatoid conditions

33
Q

Difference between Mallet Finger and Swan-Neck Deformity

A

In Mallet Finger → Only Distal IP-Joint Flexion

In Swan-Neck Deformity →

Distal IP-Joint Flexion + Hyperextended Proximal IP-Joint

34
Q

What is Boutonniere Deformity?

A

Flexion of Proximal IP-Joint

Due to Avulsion of Medial Band

35
Q

What is Extensor Retinaculum?

A

The extensor tendons enter the dorsum through Externsor retinaculum

Has 6 Compartments from Lateral to Medial

36
Q

Muscles (tendons) passing through 1st Compartment

A

Abductor pollicis longus

Extensor pollicis brevis

37
Q

De Quervain’s Synovitis is due to

A

Involvement of
Abductor pollicis longus and Extensor pollicis brevis

Finkelstein Test Positive

38
Q

Finkelstein Test is used for;

A

To check De Quervain’s Synovitis

Ask Patient to;

  1. To make Fist
  2. To give Ulnar Deviation

If patient has severe pain over the lower end of Radius, then test is Positive

39
Q

Space between 1st and 3rd Compartment;

A

Anatomical Snuff Box

40
Q

Boundaries of Anatomical Snuff Box;

Medial -

Lateral -

A

Medial - 3rd compartment

Lateral - 1st Compartment

41
Q

Floor of Anatomical Snuff Box

A 
Radius, 
Scaphoid, 
Trapezium, 
Base of 1st Metacarpal bone, 
ECRL, 
ECRB
42
Q

Roof of Anatomical Snuff Box,

A

Skin,
Superficial fascia,
Cephalic vein,
Superficial branch of radial nerve

43
Q

Content of Anatomical Snuff Box;

A

Radial Artery

44
Q

Muscle(Tendon) passing through 2nd Compartment;

A

ECRL

ECRB

45
Q

Muscle(Tendon) passing through 3rd Compartment;

A

Extensor pollicis longus

46
Q

Structures passing through 4th Compartment;

A

Extensor digitorum
Extensor indicis
Posterior interosseous nerve
Anterior interosseous artery

47
Q

Structures passing through 5th Compartment;

A

Extensor digiti minimi

48
Q

Structures passing through 6th Compartment;

A

Extensor carpi ulnaris

49
Q

Intersection Syndrome is due to

A

Crossing of 1st and 2nd Compartments → 4-6 cm proximal to wrist joint

This leads to Friction of ECRL, ECRB

Upper Limb ~ Anatomy (9 decks)

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