Week 8: Wrist and Hand

Question 1

How many bones are there in the wrist and hand?

Answer 1

29

Question 2

Name the carpal bones

Answer 2

scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate

Question 3

What is radial deviation?

Answer 3

hand deviates towards radius (abduction)

Question 4

What is ulnar deviation?

Answer 4

hand deviates towards ulna (adduction)

Question 5

What is finger abduction?

Answer 5

moving digits away from digit 3

Question 6

What is finger adduction?

Answer 6

moving digits towards digit 3

Question 7

What are the different wrist joints?

Answer 7

radiocarpal joint, midcarpal joint, intercarpal joints, carpometacarpal joints

Question 8

What is the classification of the radiocarpal joint?

Answer 8

synovial, bi-axial, ellipsoid

Question 9

What is the classification of the midcarpal joints?

Answer 9

synovial, bi-axial, ellipsoid

Question 10

What is the classification of the intercarpal joints?

Answer 10

synovial, multi-axial, planar

Question 11

What is the classification of the common carpometacarpal (CMC) joints?

Answer 11

synovial, multi-axial, planar

Question 12

What is the classification of the first CMC joint?

Answer 12

synovial, bi-axial, saddle

Question 13

What movements occur at the radiocarpal joint?

Answer 13

flexion/extension, radial deviation/ulnar deviation

Question 14

What is the triangular fibrocartilage complex?

Answer 14

the articular disc at ulna head, palmar radioulnar ligament, dorsal radioulnar ligament

Question 15

What are the different radiocarpal ligaments?

Answer 15

radial collateral ligament (RCL), ulna collateral ligament (UCL), palmar radiocarpal ligament (PRCL) Palmar ulna carpal ligament (PUCL) and dorsal radiocarpal ligament (DRCL)

Question 16

What are the attachments of the RCL?

Answer 16

radial styloid to scaphoid/trapezium

Question 17

What are the attachments of the UCL?

Answer 17

ulnar styloid to triquetrum/pisiform

Question 18

What are the attachments of the PRCL?

Answer 18

anterior radius to scaphoid/lunate/triquetrum

Question 19

What are the attachments of the PUCL?

Answer 19

anterior ulna to scaphoid/lunate/triquetrum

Question 20

What are the attachments of the DRCL?

Answer 20

posterior radius to scaphoid/lunate/triquetrum

Question 21

What are the ligaments of the 1st CMC joint?

Answer 21

radial CMC/collateral ligament, anterior oblique ligament, posterior oblique ligament

Question 22

What are the attachments of the radial CMC/collateral ligament?

Answer 22

trapezium and 1st metacarpal

Question 23

What are the attachment of the anterior oblique ligament?

Answer 23

anterior trapezium to medial 1st metacarpal

Question 24

What are the attachment of the posterior oblique ligament?

Answer 24

posterior trapezium to medial 1st metacarpal

Question 25

What are he movements that occur at the 1st CMC joint?

Answer 25

flexion/extension, abduction/adduction, opposition (combination)

Question 26

What are the joints of the hand?

Answer 26

metacarpophalangeal (MCP) joints and interphalangeal (IP) joints

Question 27

What is the classification of the MCP joints?

Answer 27

synovial, bi-axial, condyloid

Question 28

What is the classification of the IP joints?

Answer 28

synovial, uni-axial, hinge

Question 29

What movements occur at the 1st MCP joint?

Answer 29

flexion (45 deg.) and abduction (15 deg.)

Question 30

What movements occur at 2-5 MCP joints?

Answer 30

flexion (90 deg.) / extension (50 deg.), abduction/adduction (40 deg.)

Question 31

What are the ligaments reinforcing the MCP joints?

Answer 31

collateral ligaments, palmar ligament, deep transverse metacarpal ligament

Question 32

Which ligaments reinforce the 1st MCP joint?

Answer 32

RCL and UCL