Unit 4 Wrist And Hand

Question 0

Metacarpals

Phalanges

Answer 0

5 mc
5 proximal
4 middle
5 distal 
Thumb-prox distal, no middle

Question 1

Carpals
Lateral-medial
Proximal-distal rows

Answer 1

8
Scaphoid lunate triquetrum pisiform
Trapezium trapezoid capitate hamate

Question 2

Radiocarpal joint

Wrist

Answer 2

Radius to prox carpals

Biaxial condyloid joint w synovial fluid

Question 3

Medial ulnar collateral ligament

Answer 3

Ulnar styloid- triquetrum hamate

Limits radial deviation

Question 4

Lateral radial collateral ligament

Answer 4

Radial styloid- scaphoid trapezium

Limits ulnar deviation

Question 5

Midcarpal joint

Answer 5

Nonaxial plane joint

Prox-distal rows

Question 6

Dorsal/Palmar

Intercarpal ligament

Answer 6

Radius- prox carpals
Dorsal-Posterior stabilizes carpals during wrist flexion
Palmar-Anterior stabilizes carpals during wrist extension

Question 7

CMC JOINT

Answer 7

Distal rows-metacarpals

Biaxial modified saddle joint- limited mobility except 5th finger opposition.

Question 8

Dorsal carpometacarpal ligament

Answer 8

Carpal-metacarpal

Question 9

Intermetacarpal joint

Answer 9

Between metacarpals

Question 10

Dorsal intermetacarpal ligament

Answer 10

Metacarpal- metacarpal

Question 11

MCP joint

Answer 11

Metacarpals-prox phalanges
1st- uniaxial hinge joint
2nd- biaxial condyloid joint

Medial/ ulnar collateral ligaments

Question 12

PIP joints

Answer 12

Prox- middle phalanges
No thumb
Uniaxial hinge joint

Medial/ ulnar collateral ligament

Question 13

IP joint

Answer 13

Prox- distal phalanx of thumb

Uniaxial hinge joint

Question 14

Carpal tunnel

Answer 14

Flexor retinaculum- carpal bones
Flexor digitorum superficialis 
Flexor digitorum profundus
Flexor pollicis Longus
Median nerve

Question 15

Carpal tunnel syndrome

Answer 15

Impingement of the four structures mostly median nerve

Surgically needs to be released to relieve pressure.

Question 16

Extensor retinaculum

Answer 16

Stabilizes posterior wrist and thumb muscle

Question 17

Wrist drop

Answer 17

Radial nerve damage

Unable to actively extend wrist

Question 18

Ape hand

Answer 18

Median nerve damage
No thumb opposition
Unable to flex dip of 2 & 3 finger
Atrophy of thenar eminence

Question 19

Claw hand

Answer 19

Ulnar nerve damage
Atrophy of interosseous muscle
Atrophy of hypothenar eminence

Question 20

Extensor carpi radialis Longus

Answer 20

Distal 1/3 of lateral supracondylar ridge of humerus
Base of 2
Extend wrist radial deviate assist flex elbow
Radial

Question 21

Extensor carpi radialis brevis

Answer 21

Common extensor tendon from the lateral epicondyle
Base of 3
Extend wrist radial deviate assist to flex elbow
Radial

Question 22

Extensor carpi ulnaris

Answer 22

Common extensor tendon from lateral epicondyle
Base of 5
Extends wrist ulnar deviates
Radial

Question 23

Extensor digitorum

Answer 23

Common extensor tendon from the lateral epicondyle
Middle and distal phalanges of finger 2-5
Extend mcp pip dip of fingers 2-5 assist to extend wrist
Radial

Question 24

Extensor indicis

Answer 24

``` Posterior surface of distal radius, interosseous membrane Tendon of extensor indicis @ 2 Extend and adduct 2 finger Assist extend wrist Radial ```

Question 25

Flexor carpi radialis

Answer 25

Common flexor tendon from medial epicondyle Base of 2 & 3 Flex wrist radial deviate assist to flex elbow Median

Question 26

Palmaris Longus

Answer 26

Common flexor tendon from medial epicondyle Flexor retinaculum palmar aponeurosis Flex wrist tense palmar fascia assist flex elbow Median

Question 27

Flexor carpi ulnaris

Answer 27

Common flexor tendon from medial epicondyle Posterior surface of proximal 2/3 of ulna Flex wrist ulnar deviate assist flex elbow Ulnar

Question 28

Flexor digitorum superficialis

Answer 28

Common flexor tendon from medial epicondyle, ulnar collateral ligament, coronoid process of ulna, prox radial shaft, interosseous membrane Sides of middle phalanges of fingers 2-5 Flex mcp pip of fingers 2-5 flex wrist Median

Question 29

Flexor digitorum profundus

Answer 29

Anterior medial surface of prox 3/4 of ulna Palmar surface of base of distal phalanges of fingers 2-5 Flex mcp dip fingers 2-5 assist to flex wrist Median 2-3 ulnar 4-5

Question 30

Anatomical snuff box

Answer 30

Abductor pollicis Longus Extensor pollicis Longus Extensor pollicis brevis Scaphoid

Question 31

Abductor pollicis Longus

Answer 31

``` Extrinsic Posterior surface of radius and ulnar, interosseous membrane Base of 1 mc Abduct and extend thumb Radial deviates wrist Radial ```

Question 32

Extensor pollicis Longus

Answer 32

``` Extrinsic Posterior surface of ulna, interosseous membrane Distal phalange of thumb Extends thumb radial deviates Radial ```

Question 33

Extensor pollicis brevis

Answer 33

``` Extrinsic Posterior surface of radius, interosseous membrane Prox phalange of thumb Extends thumb radial deviates Radial ```

Question 34

Opponens pollicis

Answer 34

Intrinsics Opposition of thumb Median

Question 35

Adductor pollicis

Answer 35

Intrinsics Adduct thumb CMC MCP Assist thumb flex MCP Ulnar

Question 36

Abductor pollicis brevis

Answer 36

Intrinsic Abduct thumb CMC MCP Assist thumb opposition Median

Question 37

Flexor pollicis brevis

Answer 37

``` Intrinsic Flex thumb CMC MCP assist thumb opposition Median superficial head Ulnar deep head ```

Question 38

Flexor pollicis Longus

Answer 38

``` Extrinsic Anterior surface of radius, interosseous membrane Distal phalange of thumb Flex thumb assist flex wrist Median ```

Question 39

Abductor digiti minimi

Answer 39

Abduct 5th finger MCP assist in 5th finger opposition Ulnar

Question 40

Flexor digiti minimi

Answer 40

Flex 5th finger MCP | Assist 5th finger opposition

Question 41

Opponens digiti minimi

Answer 41

Opposition of 5th finger | Ulnar

Question 42

Extensor digiti minimi

Answer 42

Extends 5th finger | Radial

Question 43

Lumbricals

Answer 43

Extend pip and dip of fingers 2-5 Flex MCP fingers 2-4 Median 2-3 ulnar 4-5

Question 44

Palmar interossei | PAD

Answer 44

Adduct fingers towards 3rd finger Assist finger flexion MCP Assist finger extension PIP DIP Ulnar

Question 45

Dorsal interossei | DAB

Answer 45

Abduct fingers MCP Assist finger flexion MCP Assist finder extension pip dip Ulnar

Question 46

Wrist flexion/ extension | Goni

Answer 46

``` 80, 70 Sitting Triquetrum Olecranon 5 metacarpal ```

Question 47

Wrist radial/ ulnar deviation | Goni

Answer 47

``` 20, 30 Sitting Capitate Midline forearm, lat epicondyle 3rd metacarpal ```

Question 48

Wrist flexion radial deviation | MMT

Answer 48

Flexor carpi ulnaris Sitting AG supination Sitting elbow on table GE neutral

Question 49

Wrist flexion ulnar deviation | MMT

Answer 49

Flexor carpi ulnaris Sitting AG supination Sitting arm on table GE neutral

Question 50

Wrist extension radial deviation | MMT

Answer 50

Extensor carpi radialis Longus/ brevis Sitting AG pronation Sitting arm on table GE neutral

Question 51

Wrist Extensor ulnar deviation | MMT

Answer 51

Extensor carpi ulnaris Sitting AG pronation Sitting Arm on table GE neutral

Question 52

Finklestein test

Answer 52

Test de quervain's Tenosynovitis found on radial border of anatomical snuffbox. Inflammation of abductor pollicis Longus extensor pollicis brevis. Pain in tendons indicating Tenosynovitis.

Question 53

Phalens test

Answer 53

Carpal tunnel syndrome | Numbness and tingling in median nerve

Question 54

Retinacular test

Answer 54

Tightness of Retinacular ligaments Dip joint does not flex with pip joint in neutral. Dip joint does flex when pip joint is slightly flexed.