Chapter 4 Upper Extrem Flashcards
How many finger bones in the hand?
27 total
Bones of the palm. 5 of them. there is a head body and base of each bone
Metacarpals. the metacarpal of the thumb is always included on a radiograph of the thumb, metacarpals are not needed on radiographs of the other digits
wrist bones. 8 of them.
carpals. !st proximal row, PA, starting from the radius side to the ulnar side
most fractured carpal bone of the wrist. articulates with the radius
Scaphoid (navicular)
also articulates with the radius. Semilunate
Lunate
articulates with the pisiform carpal bone. Cuniform
triquetrum
articulates with the triquetrum, smallest bone of the carpals
pisiform
located between the scaphoid and the 1st metacarpal. greater multangular
trapezium
lesser multangular.
trapezoid
largest bone of the carpals. OS magnum
Capitate
has a hook like process called the hamulus. Unciform
Hamate
joint spaces between two phalanx
Interphalangeal joints (IP) thumb
space between the distal phalanx and the middle phalanx
distal interphalangeal joint (DIP)
space between the proximal and middle phalanx
proximal interphalangeal joint (PIP)
space between the distal metacarpals and the proximal phalanx (MCP) knuckles
metacarpalphalangeal joint
joints that join the carpals to the proximal metacarpals
carpometacarpal joints
joints are named by the most _______part first and then the ________
proximal;distal
forearm bone on the thumb side
radius
conical projections on the extreme distal ends of the radius and the ulna
styloid process
on the medial side of the radius. Head of the ulna fits into this notch
ulnar notch
proximal end of the radius, has a neck and radial tuberosity
head of radius
shorter of the 2 forearm bones
radius
directly turns the wrist; primary bone
radius
forearm bone on the pinky finger side
ulna
primarily involves the formation of the elbow joint
ulna
two pointy processes of the proximal ulna called the _________and the ________process
olecranon; coronoid
coronoid tubercle process on the medial side
ulna
trochlear notch articulates with the ____end of the humerus
distal
the depression on the lateral aspect of the proximal ulna
radial notch
at the radial notch (the joint articulation) allows for rotation (pronation) of the forearm. The __crosses over the more stationary __.
radius; ulna
