Bones of the Hand Flashcards
What is another word for wrist?
Carpus
How many carpal bones are there?
8
How are the carpal bones arranged?
In proximal and distal rows of 4.
What do the carpal bones do?
Give flexibility to the wrist.
The carpus is ______ from side to side posteriorly, and _____ anteriorly.
convex; concave.
How do the carpal bones move?
The two rows of carpals glide on each other; each carpal bone also glides on those adjacent to it.
The proximal surfaces of the proximal rows of the carpals articulate with?
the inferior end of the radius and the articular disc of the wrist joint.
The distal surfaces of the proximal row of carpal bones articulate with the
distal row.
From lateral to medial, the four bones in the proximal row of carpals are…
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
From lateral to medial, the four bones in the distal row of carpals are…
- Trapezium
- Trapezoid
- Capitate
- Hamate
What is prominent on the scaphoid bone?
the scaphoid tubercle
What process extends anteriorly off of the Hamate bone?
Hook of Hamate
The proximal surfaces of the distal row of carpals articulate with _____ and their distal surfaces articulate with _____.
proximal row of carpals; metacarpals.
The carpus forms the skeleton of
the palm of the hand
Each of the carpal bones have what?
a base, shaft, and head.
