Lecture 12 - Wrist Complex Flashcards
1
Q
What are the proximal bones of the wrist?
A
- scaphoid
- lunate
- triquetral
- pisiform
(lateral to medial)
2
Q
Which carpals articulate with the radius?
A
- scaphoid
- lunate
- triquetral
3
Q
What are the distal bones of the wrist?
A
- trapezium
- trapezoid
- capitate
- hamate
(lateral to medial)
5
Q
Describe the radiocarpal joint.
A
- condyloid
- synovial
- articulations with radius (lateral and medial concave fossae) to scaphoid, lunate, and triquetral
6
Q
What are the ligaments of the radiocrapal joint?
A
- lateral (radial) collateral ligament
- medial (ulnar) collateral ligament
- dorsal radiocarpal ligament
- palmar radiocarpal ligament
7
Q
What nerves and arteries are associated with the radiocarpal joint?
A
Arteries:
- dorsal carpal arch
- palmar carpal arch
Nerves:
- anterior interosseous (median nerve)
- posterior interosseous nerve (radial nerve)
- dorsal and deep branches of ulnar nerve
8
Q
What is the palmar structure sequence?
A
- radius
- radial artery
- flexor carpi radialis tendon
- median nerve (under palmaris longus tendon)
- flexor digitorum superficialis tendon
- ulnar artery
- ulnar nerve
- flexor carpi ulnaris tendon
9
Q
What forms the anatomical snuff box?
A
Dorsal border:
-extensor pollicis longus
Palmar border:
- extensor pollicis brevis
- abductor pollicis brevis
Floor:
-scaphoid
10
Q
What is the most commonly fractured bone in the wrist and what is a possible complication of its fracture?
A
- scaphoid
- compromise of the radial artery
