Wrist & Hand Flashcards
How many bones in the wrist and hand
27
How many bones in the wrist
8
Bones in the distal end of the wrist
Hamate
Capitate
Trapezoid
Trapezium
Bones at the proximal end of the wrist
Scaphoid
Lunate
Triquetrum
Pisiform
Distal wrist bones articulate with
Carpometacarpal
Proximal wrist bones articulate with
the ends of the radius and ulna
Joint type: wrist
synovial ellipsoid (4 movements0
Movements of the wrist
Flexion
Extension
Abduction (radial deviation)
Adduction (ulnar deviation)
Muscles: Wrist flexors
Flexor carpi ULNARIS (pisiform & 5th)
Flexor carpi RADIALIS (2nd & 3rd)
Palmaris Longus (absent in 15%)
Muscles: Wrist extensors
Extensor carpi ULNARIS
Extensor carpi RADIALIS LONGUS
Extensor carpi RADIALIS BREVIS
Muscles: Radial deviation (abduction)
Flexor carpi radialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Muscles: Ulna deviation (adduction)
Flexor carpi ulnaris
Extensor carpi ulnaris
Muscles that cause the hand to move can be located out with the boney hand structure
extrinsic muscles
muscles that are actually located within the hand structure
Intrinsic muscles
Bones of the hand
Metacarpals (palm) x 5
Proximal phalanges x 5
Middle phalanges (not thumb) x4
Distal phalanges (tips) x 5