wrist Flashcards
What are the 2 articulations of the wrist?
Radiocarpal
Midcarpal joints
T/F: wrist actions = flex/ext, radial/ulnar deviation, active rotation
F: NO active rotation
T/F: ulnar= lat side
F: medial
(radial/thumb= lat)
T/F: distal articular surface of radius= concave M/L and A/P
T
T/F: radiocarpal joint = betw distal end of radius and prox row of carpal bones
T
Midcarpal joint joins __ and ___
Prox and dis rows of carpal bones
What mvt do the radiocarpal and mid carpal joint do
Radial and ulnar deviation
Palmar and volar = ___, dorsal =___
Ant
Post
Dorsal (Lister’s) tubercle separates what 2 tendons
Extensor carpi radialis brevis
Extensor pollicis longus
T/F: ulnar tilt allows hand to rotate further into ulnar deviation than radial
T
How many degrees of ulnar tilt?
25 deg
Palmar tilt allows for greater mvt of __ than __ @ wrist
Flexion
Extension
How many degrees of palmar tilt?
10 deg
T/F: ulnar tilt limits radial dev, palar tilt limits ext
T
Carpal bones
Scaphoid
Lunate
Triquetrum
Pisiform
Trapezium
Trapezoid
Capitate
Hamate
Carpal bone mnemonic
Some Lovers Try Positions
That They Can’t Handle
What carpal bones make up the prox row
Scaphoid
Lunate
Triquetrum
Pisiform
What carpal bones make up the dis row
Trapezium
Trapezoid
Capitate
Hamate
T/F: proximal row= mobile, distal row= stable
T
Scaphoid pole: prox=___, distal=___
Scaphoid facet (radius)
Trapezium and trapezoid
T/F: triquetrum = central bone of prox row and is unstable/most mobile (no musc attachments)
F: lunate
T/F: scaphoid and triquetrum are avascularized
F: scaphoid and lunate
Proximal surface of lunate= ___, distal=___
Convex (similar to scaphoid)
Concave
What 3 carpal bones are fractured most (rank)
- scaphoid
- lunate
- triquetrum