Wrist and Hand

Question 1

Radius is ___ relative to the carpals

Answer 1

Biconcave

Question 2

Ulna is ___ at its distal end relative to the triquetrum

Answer 2

Convex

Question 3

Proximal aspect of proximal row is

Answer 3

Biconvex

Question 4

Distal aspect of proximal row is

Answer 4

Concave

Question 5

Metacarpal heads are ____

Answer 5

Biconvex

Question 6

Phalanges’ proximal ends are mostly ___

Answer 6

Biconcave

Question 7

Phalanges’ distal ends are mostly ___

Answer 7

Biconvex

Question 8

Dorsal radiocarpal joint limits

Answer 8

flexion, pronation, and some radial deviation

Question 9

Radiocarpal joint - articulation

Answer 9

Convex scaphoid and lunate articulate with concave radius

Question 10

Carpometacarpal joint - articulation - First CMC is what

Answer 10

A saddle articulation

Trapezium convex in med/lat direction, concave in ant/post direction

Question 11

Carpometacarpal joint - articulation - 2nd through 5th CMC

Answer 11

flat between bases of metacarpals and distal row of carpals

Question 12

MCP joints - articulation

Answer 12

Convex metacarpals with concave proximal phalanges

Question 13

PIP joints - articulation

Answer 13

Convex distal aspect of proximal phalanges with concave proximal aspect of middle phalanges

Question 14

Wrist flexors

Answer 14

Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
Flexor digitorum profundus

Question 15

Wrist extensors

Answer 15

Extensor digitorum
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris

Question 16

Radial deviators

Answer 16

Flexor carpi radialis

Extensor carpi radialis longus and brevis

Question 17

Ulnar deviators

Answer 17

Flexor carpi ulnaris
Flexor digitorum profundus
Extensor carpi ulnaris

Question 18

Extrinsic finger flexors

Answer 18

Flexor digitorum superficialis - to PIP joint

Flexor digitorum profundus

Question 19

Extrinsic finger extensors

Answer 19

Extensor digitorum

Question 20

Intrinsic muscles

Answer 20

Thenar mm
Hypothenar mm
Lumbricals
Dorsal interossei 
Palmar interossei

Question 21

Intrinsic muscles - thenar mm

Answer 21

Abductor pollicis brevis
Opponens pollicis
Flexor pollicis brevis
Adductor pollicis

Question 22

Intrinsic muscles - hypothenar mm

Answer 22

adductor digiti minimi
opponens digiti minimi
flexor digiti minimi

Question 23

Lumbricals do what

Answer 23

Flex MCP
Ext IP
Radially deviate MCP

Question 24

Dorsal interossei do what

Answer 24

ABD

Question 25

Palmar interossei do what

Answer 25

ADD

Question 26

Collateral finger ligaments run

Answer 26

separately from lateral condyle to distal phalanx and lateral volar plate at each MP, PIP, and DIP

Question 27

Accessory finger ligaments run from

Answer 27

condylar head to volar plate

Question 28

Transverse finger ligaments are present at

Answer 28

MCP joints

Question 29

Wrist Radial Collateral Ligament - limits

Answer 29

Ulnar deviation

Question 30

Wrist Ulnar Collateral Ligament - limits

Answer 30

Radial deviation

Question 31

Wrist Palmar Ulnocarpal ligament - limits

Answer 31

Extension and supination

Question 32

Wrist Palmar Radiocarpal Ligament - limits

Answer 32

Extension and supination through knuckles

Question 33

Extensor hood - expansion of

Answer 33

Extensor digitorum mm

Question 34

Extensor hood - pupose

Answer 34

Assist with extension of PIP and DIP joints

Question 35

Volar Plate - present on

Answer 35

Palmar aspect of MCP, PIP, and DIP joints

Question 36

Volar plate - functions to

Answer 36

increase articular surface during extension and protect joint volarly Volar plate is more mobile at MCP than at IPs

Question 37

PIPs and DIPs - biomechanics - during flexion the digits

Answer 37

rotate radially to enhance grasp and opposition

Question 38

MCPs - biomechanics - during flexion, digits

Answer 38

rotate radially

Question 39

First CMC - during flex/ext

Answer 39

Concave on convex

Question 40

First CMC - during abd/add

Answer 40

Convex on concave

Question 41

First CMC - during flex and abd

Answer 41

First MC rotates ulnarly

Question 42

First CMC - during ext and add

Answer 42

First MC rotates radially

Question 43

Wrist biomechanics - flexion

Answer 43

Proximal scaphoid/lunate glide dorsally relative to radius

Question 44

Wrist biomechanics - extension

Answer 44

Proximal scaphoid.lunate glide ventrally relative to radius

Question 45

Wrist biomechanics - Radial deviation

Answer 45

Proximal row glides ulnarly | Proximal surface of scaphoid rotates palmarly

Question 46

Wrist biomechanics - Ulnar deviation

Answer 46

Proximal row glides radially as a unit