Bones And Joints Of The Wrist And Hand

Question 1

How many carpal bones are there?

Answer 1

8

Question 2

What are the carpal bone names?

Answer 2

Scaphoid, lunate, triquetrum, pisiform

Hamate, capitate, trapezoid and trapezium

Question 3

Wrist joint is formally called?

Answer 3

Radiocarpal joint

Question 4

Which bones articulate at the wrist joint?

Answer 4

Radius, scaphoid, lunate and triquetrum

Question 5

What type of joint is the first CMC?

Answer 5

(Thumb) Synovial saddle joint

Question 6

What movements are allowed at MCP?

Answer 6

Flexion, extension, abduction, abduction and circumduction

Question 7

What is PIP and DIP?

Answer 7

Proximal interphalangeal joint

Distal interphalangeal joint

Question 8

What movements are allowed at PIP and DIP?

Answer 8

Flexion and extension

Question 9

What is mid prone position?

Answer 9

Functional position

Question 10

What is the definition of intrinsic muscles?

Answer 10

Muscles that originate partly within the hand

Question 11

What is he definition of extrinsic muscles?

Answer 11

Muscles that originate partly within the forearm

Question 12

What muscle is absent in 15% of population

Answer 12

Palmaris longus

Question 13

Why is the palmaris longus absent?

Answer 13

It isn’t a muscle we need and is quite commonly used for muscle grafts

Question 14

What area does the thenar refer to?

Answer 14

The thumb

Question 15

What area does hypothenar refer to?

Answer 15

The little finger

Question 16

Name the muscles involved in closing the hand (8)

Answer 16

Extrinsic: FDS, FDP, flexor pollicis longus
Intrinsic: Flexor pollicis brevis, opponens pollicis, flexor digiti minimi, opponens minimi, adductor pollicis

Question 17

Name the muscles involved in opening the hand (8)

Answer 17

Extrinsic: Abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor digitorum, extensor indicis, extensor digiti minimi
Intrinsic: Abductor pollicis brevis, abductor digiti minimi

Question 18

What are the 3 muscles involved in precision movements of the hand?

Answer 18

Lumbricals
Palmar interossei 
Dorsal interossei (interossei = between bones)

Question 19

What are the 3 nerves of the hand and fingers?

Answer 19

Median, ulnar, radial