Upper limb

Question 1

Anterior Division fibers of Brachial Plexus

Answer 1

Musculocutaneous

Median

Ulnar

Question 2

Posterior division fibers of Brachial plexus

Answer 2

Axillary

Radial

Question 3

C5 & C6 Nerves

Answer 3

Suprascapular

Musculocutaneous

Axillary

Question 4

C8 & T1 nerve

Answer 4

Ulnar

Question 5

Musculocutaneous Nerve Muscle innervation

Answer 5

All muscles of the anterior compartment of the arm

Question 6

Primary action of Musculocutaneous nerve

Answer 6

Fleb elbow

Supination (bicept brachii)

Question 7

Median N. Muscles in the forearm

Answer 7

Anterior compartment except:

• Flexor carpi ulnaris
• Ulnar half of the flexor digitorum profundus

Question 8

Primary action of Median N in forearm

Answer 8

Flex writs and ALL digits

Pronation

Question 9

Median N muscles in hand

Answer 9

1. Thenar compartment: opposition of thumb
2. Central compartement (Lumbricals of Digit 2 and 3): Flexion of Metacarpophalangeal and extends interphalangeal joints of Digits 2 and 3

Question 10

Ulnar N Muscles in Forearm

Answer 10

Anterior compartment: Flex wrist (weak) and digits 4 and 5

Question 11

Ulnar nerve muscle of Hand

Answer 11

1. Hypothenar compartment
2. Central compartment (interossei muscles: Palmar and Dorsal)
   
   1. Dorsal: Abduct digits 2-5 (DAB)
   2. Palmar: Adduct digits 205 (PAD)
3. Lumbricals: Digits 4 & 5
4. Adductor pollicis

Question 12

Dorsal Scapular N muscle

Answer 12

Rhomboid

Question 13

Long thoracic N muscle

Answer 13

Serratus anterior

Question 14

Subscapular N muscle

Answer 14

Supraspinatus: Abduct shoulder

Infraspinatus: Laterally rotate shoulder

Question 15

Erb-Duchenne Palsy

Answer 15

Waiter’s Tip Syndrome

C5 and C6

• Affects:
  
  • Axillary
  • Subrascapular
  • Musculocutaneous
• Sighs:
  
  • Arm is medially rotated and adducted at the shoulder
  • Limb is pulled into aduction and medial rotation
  • Forearm is extended and pronated
  • Sensory loss on Lateral forearm to base of thumb

Question 16

Klumpke’s Paralysis

Answer 16

C8 and T1

• Affects:
  
  • Ulnar N
  • Median N
• Signs:
  
  • Claw hand
  • Ape hand
  • Horner syndrome
  • Sensory loss on medial forearm and medial 1.5 digits

Question 17

Hand of benediction seen in

Answer 17

Median Nerve injury at elbow (supracondylar fracture of humerus)

Loss of digital flexion of lateral 3 digits

Question 18

Ape hand

Answer 18

Median N injury at elbow (Supracondylar fracture of humerus)

Loss of thum opposition

Question 19

Thenar atrophy seen in

Answer 19

Median N injury at elbow (supracondylar fracture of humerus)

Question 20

Ulnar N damage leads to

Answer 20

Loss of hypothenar, third and fourth lumbricals, all interossei, and adductur pollicis

Question 21

Ulnar N damage leads to what deviation

Answer 21

Radial deviation

Question 22

Anterior boundry of Carpal tunnel

Answer 22

Flexor retinaculum

Question 23

Posterior boundry of Carpal tunnel

Answer 23

Proximal row of Carpal bones (Lunate)

Question 24

SITS of Rotator Cuff

Answer 24

• Supraspinatus
• Infraspinatus
• Teres minor
• Subscapularis

Question 25

Most frequently damaged muscle in Rotator Cuff injury

Answer 25

Supraspinatus