ULNAR NERVE

Question 1

Medial cord of b plexus C8-T1

Answer 1

Ulnar nerve

Question 2

Formed in axilla is

Answer 2

ULnar nerve

Question 3

ULnar nerve in axilla

Answer 3

Between axillary (third part) artery and vein

Question 4

Then Ulnar nerve enters in arm

Answer 4

Posteromedial to Brachial Artery and stays medial in arm

Question 5

At the mid arm level the nerve pierces the

Answer 5

medial intermuscular septum at the arcade of struthers

Question 6

Arcade of struthers are

Answer 6

aponeurotic fibers from medial triceps to intermuscular septum

Question 7

Arcade of Struthers is located 8 cm proximal to the

Answer 7

medial epicondyle

Question 8

So up to the mid arm level the ulnar nerve is in the

Answer 8

Anterior compartment of the arm

Question 9

After piercing the IM septum, it becomes in the

Answer 9

posterior arm compartment

Question 10

Then lies antero medial to the

Answer 10

Triceps Brachii muscle

Question 11

Then becomes posterior to the

Answer 11

medial epicondyle

Question 12

Then goes through the

Answer 12

CUBITAL TUNNEL

Question 13

Also the artery in the cubital tunnel is the

Answer 13

SUPERIOR ULNAR COLLATERAL ARTERY

Question 14

Cubital Tunnel roof formed proximally by

Answer 14

OSBORNE LIGAMENT

Question 15

Cubital tunnel floor is formed by

Answer 15

Posterior and transverse bands of medial carpal ligaments and elbow joint capsule

Question 16

Then nerve passes through the 2 heads of the

Answer 16

FCU

Question 17

Also the nerve passes under the

Answer 17

FLEXOR PRONATOR APONEUROSIS

Question 18

Then nerve dives into the

Answer 18

Anterior compartment of the forearm

Question 19

In the forearm it passes between FCU and

Answer 19

FDP

Question 20

Enters the hand passing lateral to which bone?

Answer 20

PISIFORM

Question 21

The ulnar nerve is Superficial or Deep to the flexor retinaculum?

Answer 21

SUPERFICIAL

Question 22

ULnar nerve if superficial to the Transverse carpal ligament ? T/F

Answer 22

TRUE

Question 23

GUYON’S CANAL ROOF

Answer 23

VOLAR CARPAL LIGAMENT

Question 24

Guyon Canal floor

Answer 24

Transverse carpal ligament, Hypothenar muscles and flexor retinaculum

Question 25

Guyon Canal Ulnar border

Answer 25

Pisiform bone and pisohamate ligamentm, abductor digiti minimi muscle belly

Question 26

Guyon canal radial border

Answer 26

The hook of the hamate

Question 27

As it enters the hand the nerve divides into

Answer 27

2 branches (superficial and deep)

Question 28

Ulnar nerve gives no branches in the

Answer 28

arm

Question 29

In forearm, ulnar nerve gives 3 branches:

Answer 29

muscular branches, cutaneous branches and articular branches

Question 30

muscular branches of ulnar nerve in forearm:

Answer 30

FCU, ulnar half of FDP

Question 31

Cutaneous branch of ulnar nerve in forearm

Answer 31

palmar and dorsal branches

Question 32

Palmar cutaneous branch of ulnar nerve

Answer 32

arises in the middle of the forearm and supplies the skin of the HYPOTHENAR eminance

Question 33

Palmar cutaneous branch of ulnar nerve passes

Answer 33

superficial to volar ligament (roof of Guyon Canal)

Question 34

Dorsal Branch of Ulnar nerve

Answer 34

Ulnar 1.5 fingers

Question 35

Articular branch of ulnar nerve

Answer 35

through cubital tunnel to the Elbow joint

Question 36

DEEP Branch of Ulnar nerve

Answer 36

MOTOR NERVE

Question 37

Muscular branches supplied by the deep branch

Answer 37

8 Interossei, Ulnar 2 lumbricals, Adductor pollicis brevis

Question 38

Also the deep branches give articular branches to the

Answer 38

wrist joint

Question 39

SUPERFICIAL BRANCH is

Answer 39

SENSORY mainly

Question 40

Superficial branch only motor brach supplies the

Answer 40

PALMARIS BREVIS MUSCLE

Question 41

Superficial branch divides into

Answer 41

medial (ulnar) and lateral (radial)

Question 42

Ulnar part supplies the

Answer 42

ulnar aspect of the little finger

Question 43

Radial branch AKA common digital branches

Answer 43

Supplies the radial aspect of the small finger and the ulnar aspect of the RING finger

Question 44

Ulnar nerve Motor inntervation in FOREARM

Answer 44

FCU, FDP (ulnar)

Question 45

Ulnar nerve Motor inntervation in Thenar muscles

Answer 45

Adductor pollicis, deep head of FPB

Question 46

Ulnar nerve Motor inntervation in Fingers

Answer 46

Interossei (8), 3rd and 4th lumbricals, Hypothenar muscles, abductor digiti minimi, opponens digiti minimi, flexor digiti minimi.

Question 47

Musician’s nerve is

Answer 47

ULNAR NERVE

Question 48

Ulnar nerve trapped at

Answer 48

Cubital and guyon tunnel

Question 49

If injury of UN at the elbow

Answer 49

loss of motor innervation at forearm, hand and loss of sensation

Question 50

FCU and ulnar FDP motor loss leads to

Answer 50

pt cannot make a fist

Question 51

Los of FCU leads to

Answer 51

loss of flexion at the wrist

Question 52

Adduction of the thumb is lost bc of

Answer 52

paralysis of adductor pollicis

Question 53

Injury of the ulnar nerve at the wrist causes

Answer 53

CLAW HAND

Question 54

CLAW HAND features

Answer 54

Hyperextension of MCP joints, flexion of IP joints, inability to spread fingers, loss of flexion of ring and little finger, loss of adduction power of the thumb