Radiocarpal joint Flashcards Preview

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Flashcards in Radiocarpal joint Deck (11):
1

Blood supply of radiocarpal joint

Branches of dorsal and palmar carpal arches (derived from ulnar and radial arteries)

2

Innervation of radiocarpal joint

Anterior interosseous branch of median nerve,
Deep and dorsal branches of ulnar nerve,
Posterior interosseous branch (off deep branch) of radial nerve

3

What strengthens the radiocarpal joint

Palmar radiocarpal,
Dorsal radiocarpal,
Ulnar collateral,
Radial collateral,
Joint capsule

4

Where is the palmar radiocarpal ligament and what does it do

Palmar side of hand - from radius to carpal bones
Ensures hand follows the forearm during supination

5

Where is the dorsal radiocarpal ligamentum and what does it do

Dorsum of hand - from radius to carpal bones
Ensures hand follows forearm during pronation

6

Where is the ulnar collateral ligament and what does it do

From ulnar styloid process to triquetrum and pisiform
Prevents excessive lateral joint displacement

7

Where is the radial collateral ligament and what does it do

From radial styloid process to scaphoid and trapezium
Prevents excessive lateral joint displacement

8

Movements facilitated by the radiocarpal joint

Flexion,
Extension,
Adduction,
Abduction

9

What forms the radiocarpal joint

Distally: scaphoid, lunate and triquetrum (convex)
Proximally: distal end of radius and articular disk (concave)

10

How does anterior dislocation of lunate occur

Falling on dorsiflexed wrist

11

Risks of anterior lunate dislocation

Can compress carpal tunnel giving symptoms of carpal tunnel syndrome
Avascular necrosis of lunate

Decks in MSK Class (87):