Chapter 7: Flashcards
Carpal bones
8 in 2 rows of 4 bones form wrist
Eight carpal bones
Trapezium, trapezoid, capitate, hamate.
Scpahoid, lunate, triquetrum and pisiform
Wrist joint ROM
70-90 flexion
65-85 degrees of extension
15-25 abduction
25-40 adduction
Wrist is what kind of joint?
condyloid
3 joints of each finger
metacarpophalangeal (MCP) proximal iinterphalangeal (PIP) distal interphalangeal (DIP)
3 wrist flexors
flexor carpi radialis
flexor capri ulnaris
palmaris longus
3 wrist extensors
extensor carpi radialis long
extensor radialis brevis
extensor carpi ulnar
What passes through carpal tunnel?
median nerve all flexors minus flexor capri ulnaris and palmaris longus
Flexor Capri radialis
O: Med. Epicondyle
I: base of second and third mc
N: median
A: flexion
Palmaris longus
O: med. Epicondyle
I: palmar fascia
N: media
A: flexion
Flexor Carpi Ulnaris
O: med. Epicondyle
I: pisiform, hamate, fifth metacarpal
N: ulnar
A: flex
Flexor Digitorium Superficialis
O: med epi
I: middle phalanges of digits 2-5
N: median
A: flex digits 2-5
Flexor Digitorum Profundus
O: proximal 3/4 ulna I: base of distal phalanges 2-5 N: median (2,3) and ulnar (4,5) A: flex dip and flex wrist, pip, mcp ** know for sure
Flexor pollicis longus
O: middle radius
I: base of distal plalanx of thumb
N: median nerve
A: flexes thumb
Extensor Carpi Ulnaris
O: lat ep.
I: base of 5th
N: radial
A: extend
Extensor Capri radialis brevis
O: late ep.
I: base of 3rd mc
N: radial nerve
A: extend wrist
Extensor Capri Radialis longus
O: lat ep
I: base of 2nd mC
N: radial
A: extend
Extensor Digitorum
O: lat ep.
I: bases of middle and distal phalanges 2-5
N: radial
A: extends wrist and digits 2-5
Most common fractured bone in wrist
Scaphoid bone
CMC joint is what kind of joint
saddle
Extensor Indicis
O: middle 1/3 of ulna
I: middle and distal phalange of second
N: radial
A: extend index
Extensor Digiti Minimi
O: lateral ep.
I: bases of middle and distal phalange (5th)
N: radial
A: extend 5th digit
Extensor Pollicis Longus
O: middle ulna
I: base of distal phalanx (1st)
N: radial
A: extends thumb
Extensor Pollicis Brevis
O: middle radius
I: base of proximal phalanx
N: radial
A: extends thumb
