Wrist Flashcards
Extensor Carpi Ulnaris
O: lateral epicondyle of humerus via common extensor tendon
I: base of 5th metacarpal
A: combined wrist extension & ulnar deviation
Extensor Carpi Radialis Brevis
O: Lateral epicondyle of humerus via common extensor tendon
I: base of 3rd metacarpal
A: wrist extension
Extensor Carpi Radialis Longus
O: Lateral supracondylar ridge of humerus
I: base of 2nd metacarpal
A: combined wrist extension & radial deviation
Palmaris Longus
O: medial epicondyle of humerus via common flexor tendon
I: palmar aponeurosis
A: wrist flexion
Flexor Carpi Radialis
O: medial epicondyle of humerus via common flexor tendon
I: base of 2-3 metacarpals
A: combined wrist flexion & radial deviation
Flexor Carpi Ulnaris
O: medial epicondyle of humerus via common flexor tendon
I: pisiform & base of 5th metacarpal
A: combined wrist flexion & ulnar deviation
Wrist Joint AK’s (all movements)
roll & glide
opposite directions
Wrist Flexion ROM
0-80 degrees
Wrist Extension ROM
0-70 degrees
Ulnar Deviation ROM
0-30 degrees
Radial deviation ROM
0-20 degrees
Wrist End Feel
Firm
Wrist Closed-Packed Positions
Full extension
Radial Deviation
Wrist Capsular Pattern
All equal
Wrist Open-Packed position
neutral flexion/extension
Colles Fracture
distal fracture
posterior displacement
Smiths’ Fracture
distal fracture
anterior displacement
Greenstick fracture
more proximal than Colles’
Not a full break
common in children
Scaphoid fracture
fracture of scaphoid bone
can result in avascular necrosis
Ganglion cyst
no known cause
on dorsal side of wrist
only operated on if painful or limits motion
Wrist Sprains
Usually due to hyperextension
usually affects the scaphohamate ligament
Use Your Hand to Name the Wrist Bones
Proximal:
S L T P
Distal:
Tu To C H
