Chap 16 hand

Question 1

What are the 2 types of grasp

Answer 1

power and precision

Question 2

carpometacarpal

Answer 2

starting position is thumb resting on the anterior surface of the 2nd metacarpal
triaxial
saddle joint

Question 3

thumb rom

Answer 3

flexion - 0-15 frontal plane sagittal axis
extension 0-20
abduction - 0-70 sagittal plane frontal axis
adduction - 0
oppositon - horizontal plane vertical axis

Question 4

metacarpophalangeal joint of thumb

Answer 4

synovial uni-axial
flexion and extension only (frontal plane sagittal axis)
flexion rolls and glides medially
laterally rolls and glides laterally

Question 5

metacarpophalangeal joint of thumb ROM

Answer 5

Flexion - 0-50
extension - 0

Question 6

MCP of fingers

Answer 6

synovial bi axial condyloid
flexion/extension in sagittal plane frontal axis
abduction/adduction in frontal plane sagittal axis

Question 7

MCP of fingers ROM

Answer 7

flexion - 0-50
Extension - 0

Question 8

is the distal end of metacarpal convex and proximal end of phalange concave?

Answer 8

true

Question 9

thumb interphalangeal (IP)

Answer 9

1 joint
flexion/extension in frontal plane sagittal axis
roll glide same direction

Question 10

thumb IP ROM

Answer 10

Flexion - 0-80
Extension - 0-20

Question 11

Finger IP

Answer 11

2 joints
flexion/extension - sagittal plane frontal axis

Question 12

Finger IP ROM

Answer 12

PIP flexion - 0-100
PIP extension - 0
DIP flexion - 0-90
DIP extension - 0 (a few with passive movement)

Question 13

Arches

Answer 13

defined as “curved legs”
base and curved upper portion
proximal, distal, and longitudinal arch

Question 14

Web space

Answer 14

space between thumb and index finger
allows grasp of larger objects

Question 15

Flexor digitorum superficialis

Answer 15

O - common flexor tendon, coronoid process, radium
I - sides of the middle phalanx of the 4 fingers ( V shape)
A - PIP and MCP joint flexion, wrist flexion
N - Median nerve (C7, C8, T1)

Question 16

Flexor digitorum profundus

Answer 16

O - coronoid process and proximal ulna
I - distal phalanx of 4 finger
A - flexes all joint in the fingers, wrist flexion
N - Median and ulnar nerve (C8, T1)

Question 17

flexor pollicis longus

Answer 17

O - radius, anterior
I - distal of thumb
A - flexes joints of thumb
N - median nerve (C8, T1)

Question 18

Abductor pollicis longus

Answer 18

O - posterior middle of radius, ulna, and interosseus
I - base of thumb
A - abducts CMC, extends CMC and MCP of thumb
N - Radial nerve (C6, C7)

Question 19

Extensor pollicis brevis muscle

Answer 19

O - posterior distal radius and interosseous membrane
I - base of proximal phalanx thumb
A - extends MCP and CMC of thumb
N - Radial nerve (C6,C7)

Question 20

extensor digitorum

Answer 20

O -

Question 21

extensor indicis

Answer 21

O - distal ulna
I - base of phalanx of second finger
A - all 3 joints of second finger
N - radial (C6, C7, C8,)

Question 22

Extensor digiti minimi

Question 23

flexor pollicis brevis muscle

Answer 23

O - trapezium, flexor retinaculum
I - proximal phalanx of thumb
A - flexes MCP and CMC of thumb
N - median (C6, C7)

Question 24

Flexor digit minimi

Question 25

abductor pollicis brevis

Answer 25

O - scaphoid, trapezium, flexor retinaculum I - proximal phalanx of thumb A - abducts CMC of thumb N - median nerve (C6, C7)

Question 26

abductor digiti minimi

Answer 26

O - pisiform, tendon of flexor Carpi ulnaris I - proximal phalanx of little finger A - abducts the MCP of little finger N - ulnar nerve (C8, T1)

Question 27

Opponens pollicis

Answer 27

O - trapezium flexor retinaculum I - first metacarpal A - opposes the thumb (CMC) N - Median nerve (C6, C7)

Question 28

adductor pollicis

Answer 28

O - capitate, bases of 2nd and 3rd metacarpal, distal 3rd metacarpal I - base of proximal phalanx of thumb A - adducts thumb (CMC) N - ulnar nerve (C8, T1)

Question 29

Opponens digiti minimi

Answer 29

O - hamate and flexor retinaculum I - 5th metacarpal A - opposes the little finger (CMC) N- ulnar nerve (C8, T1)

Question 30

Dorsal interosseus

Answer 30

O - adjacent metacarpals I - base of proximal phalanges of index, middle and ring finger A - abducts fingers at MCP joint N - ulnar nerve (C8, T1)

Question 31

Palmar interosseus

Answer 31

O - 2nd, 4th, and 5th metacarpals I - base of respective proximal phalanx A - adduct index, ring, middle fingers at MCP joint N - ulnar nerve (C8, T1)

Question 32

Lumbrical muscle

Answer 32

O - tendon of flexor digitorum frofundus muscle I - tendon of extensor digitorum muscle A - simultaneous flexion of MCP and extension of the PIP and DIP of 4 fingers N - 1st - 2nd lumbricals : medial nerve (C8, T1) 3rd and 4th lumbricals : ulnar nerve (C8, T1)

Question 33

What muscles of the hand are innervated by the radial nerve (C6-C8 & C6, C7)

Answer 33

Extensor digitorum, extensor indicis, extensor digiti minimi, extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus

Question 34

What muscles of the hand are innervated by the median nerve (C-T1 & C8, T1 & C6, C7)

Answer 34

Flexor digitorum superficialis, flexor digitorum profundus (ring and little finger), flexor pollicis longus & bevis, abductor pollicis brevis, opponens pollicis, lumbricals (middle and index)

Question 35

What muscles in the hand are innervated by the ulnar nerve (C8, T)

Answer 35

Flexor digitorum profundus (ring and little),flexor digiti minimi, abductor digiti minimi, opponens digiti minimi, adductor. Pollicis, dorsal and palmar interossei