Hand and Wrist Flashcards
How many bones total in hand/wrist?
27
How many phalanges?
14
How many metacarpals?
5
How many carpals?
8
Composition of fingers 2-5
Three phalanges - proximal, middle, distal
Composition of thumb (first digit)
Two phalanges - proximal and distal
The three parts of the phalanx and metacarpal bones
Head (distal), body (shaft), base (expanded proximal base)
The joint between the two phalanges of the thumb
interphalangeal joint (IP)
The joint between the first metacarpal and the proximal phalanx or thumb
First metacarpophalangeal joint (MCP)
What are joints of the fingers starting with most distal?
Distal interpalangeal joint (DIP), Proximal interphalangeal joint (PIP), metacarpalphalangeal joints (MCP)
Name of joints at the proximal end of metacarpals that articulate with 5 carpals
carpometacarpal joints (CMC)
First metacarpal articulate with…
trapezium
Second metacarpal articulates with…
trapezoid
Third metacarpal articulates with…
capitate
Fourth and fifth metacarpal articulates with…
hamate
Proximal row of carpals beginning on thumb side
scaphoid, lunate, triquetrum, pisiform
Another term for scaphoid
navicular
Smallest of the carpal bones
pisiform
Largest of the carpal bones
capitate
Distal row of carpals starting on thumb side
trapezium, trapezoid, capitate, hamate
What carpal bone articulate with the 4th and 5th metacarpals?
Hamate
What is the smallest carpal bone in distal row?
trapezoid
Another term for triquetrum?
cuneiform
Classification of all joints of the upper limbs
synovial/diarthroidal
What movement type are the IP joints?
ginglymus - hinge-type. Moves two directions - flexion and extension
What type of movement is the wrist joint?
ellipsoidal - movement in 4 directions
What is the wrist joint called?
radiocarpal joint
What two carpal bones articulate directly with the radius?
scaphoid and lunate
Primary malignant bone tumor
multiple myeloma
