lecture 10- upper extremity anatomy

Question 1

PADS

Answer 1

palmar adductors
(pad/paw)

Question 2

all muscles in hand are innervated by the ulnar nerve EXCEPT

Answer 2

1/2 LOAF

Question 3

1/2 LOAF

Answer 3

Thumb half of Lumbricals

Thenar eminince muscles (Opponens pollicis, Abductor pollicis, Flexor pollicis brevis)

Question 4

anatomical snuffbox push down

Answer 4

scaphoid fracture

about 15% of scaphoid fractures develop avascular necrosis

Question 5

lumbricals are “ “ muscles

Answer 5

puppet

-if you were using a puppet you would use these muscles

Question 6

Nerve that supplies the thenar eminance?

Answer 6

median nerve

median nerve is injured in capral tunnel syndrome

Question 7

What comes from the brachial plexus?

Answer 7

C5-T1

Question 8

Nerves of the upper arm (3)

Answer 8

Median nerve
Ulnar nerve
Radial nerve

Question 9

Radial is

Answer 9

thumb side

Question 10

intrinsic mucles of the hand

Answer 10

DABS
PADS

Lumbricals

Question 11

ulanar is

Answer 11

pinky side

Question 12

Posterior forearm arteries

Answer 12

Brachial artery
Profunda brachii artery

Question 13

3 forearm joints

Answer 13

Humeroulnar joint
Humeroradial joint
Superior radioulnar

Question 14

DABS

Answer 14

dorsal abductors (dab)

Question 15

2 muscles that do supination of forearm

Answer 15

• Biceps brachii
• Supinator

Question 16

Pronation of forearm (2)

Answer 16

• Pronator teres (proximal)
• Pronator quadratus (distal)

Question 17

From pronated or supinated to mid-range muscle

Answer 17

• Brachioradialis
  (can bring us into the mid-range of pronation or supination)

Question 18

Forearm nerves:
anterior compartment
(superficial)

Answer 18

1. Pronator teres
2. Flexor carpi radialis (FCR)
3. Palmaris longus
4. Flexor carpi ulnaris (FCU)

(PFPF)

Question 19

intermediate anterior forearm nerve

Answer 19

5. Flexor digitorum superficialis (FDS)

Question 20

Forearm nerves:
anterior compartment
(deep)

Answer 20

Flexor digitorum profundus (FDP)

Flexor pollicis longus (FPL)– “pollicis”= thumb, help w thumb flexion
Pronator quadratus—forearm flexor

Question 21

Retinacula (extensor retinaculum)

Answer 21

= extends wrist, holds the tendons down against the posterior wrist

Question 22

Forearm nerves- posterior compartment
Superficial:

Answer 22

1. Brachioradialis
2. Extensor carpi radialis longus (ECRL)
3. Extensor capri radialis brevis (ECRB)
4. Extensor digitorum (ED)
5. Extensor digiti minimi (EDM)
6. Extensor carpi ulnaris (ECU)

Question 23

Forearm nerves- posterior compartment
Deep:

Answer 23

7. Anconeus
8. Supinator
9. Abductor pollicis longus (APL)
10. Extensor pollicis brevis (EPB)
11. Extensor pollicic longus (EPL)
12. Extensor indicis (EI)

Question 24

All posterior forearm innervated by the

Answer 24

radial nerve!!!!

Question 25

PADs and DABs innervated by the

Answer 25

ulnar nerve