Wrist And Hand Flashcards
How many carpal bones are in the wrist?
8 carpal bones
What 2 bones does the wrist articulate with?
The radius & ulna
How many metacarpal bones are there?
5 metacarpal bones
How many phalange & phalange bones are there?
5 phalange & 14 phalange bones
What are the proximal carpal bones? ‘
Scapnold, lunate, triquetrum, pisiform
What are the distal carpal bones?
Trapezium, trapezoid, capitate, hamate
What carpal bone articulates with the radial head at it’s distal end?
The scapnold
What is a carpal tunnel?
Carpal bones form a three - sided arch
Wrist movement
Muscles inserting on the carpals and metacarpal bones
Finger movement
Muscles inserting on the phalange bones
Movements of the wrist
Flextion & extension
Abduction (radial deviation)
Adduction( (ulnar deviation)
Movements of the phalanges?
Flextion & extension
MCP joints - abduct & adduct
Where are extensors located?
Dorsal aspect
Where are flexors located?
Palmar aspect
Origin of the flexor carpi radialis, palmar longus, and flexor carpi ulnaris?
Medial epicondyle
Insertion of flexor carpi radialis?
Base of second and third metacarpal
Insertion of palmaris longus
Palmaris aponeurosis of second- fifth metacarpal
Insertion of flexor carpi ulnaris
Pisiform, hamate, & base of fifth metacarpal
What does the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus all have in common
- Originate at the medial epicondyle
- Insert on the palmar aspect of the hand
- Perform wrist flextion
Origin of extensor carpi ulnaris, extensor carpi radialis brevis, and extensor carpi radialis longus?
Lateral epidcondyle
Radialis longus also originates on the lateral supracondyloid ridge
Second origin of extensor carpi ulnaris
Middle two fourths of posterior side of ulna
Insertion of extensor carpi ulnaris
Base of fifth metacarpal
Insertion of extensor carpi radialis brevis
Base of third metacarpal
Insertion of extensor carpi radialis longus
Base of second metacarpal (dorsal aspect)
What does extensor Capri ulnaris, extensor Capri radials brevis, & extensor Capri radials longs all have in common
- Originate at lateral epicondyle
- Insert on the dorsal aspect
- Perform wrist extension
Origin of flexor digitorum superficialis?
Medial epicondyle, medial coranoid process, upper two thirds of anterior border of u’na
Insertion of flexor carpi digitorum superficialis
Split tendons attach to sides of middle phalanx of four fingers (palmar aspect)
