elbow, forearm and wrist

Question 1

wrist joint type

Answer 1

elipsoid synovial joint between distal radius and associated triangular fibrocartilage articular disc (not ulna), with proximal row of carpal bones

Question 2

6 strong ligaments stabilising wrist joints

Answer 2

ulnar collateral, radial collateral, palmar radio-carpal, palmar ulnocarpal, dorsal radio-carpal, inter-carpal

Question 3

3 movements of wrist

Answer 3

flexion/extension, radial deviation (abduction) and ulnar deviation (adduction), circumduction

Question 4

5 muscles involved in flexion of wrist joint and nerve spinal levels

Answer 4

flexor carpi radialis, flexor carpi ulnaris, long flexors of thumb and fingers, palmaris longus, abductor pollicis longus; C6,7

Question 5

4 muscles involved in extension of wrist joint and nerve spinal levels

Answer 5

extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, long extensors of thumb and fingers; C6,7

Question 6

5 muscles involved in radial deviation (abduction)

Answer 6

flexor carpi radialis, extensor carpi radialis longus, extensor carpi radialis brevis, abductor pollicis longus, extensor pollicus brevis

Question 7

2 muscles involved in ulnar deviation (adduction)

Answer 7

extensor carpi ulnaris, flexor carpi ulnaris

Question 8

which bone doesn’t directly articulate with carpal bones, and what is present instead

Answer 8

(distal end of) ulna; instead theres is an intervening fibrous articular disc articulating with the triquetrum carpal bone and styloid process of ulna

Question 9

what happens during pronation to the fibrous articular disc

Answer 9

dragged over, so radius crosses over ulna