Week 12

Question 1

distal radioulnar joint description

Answer 1

synovial pivot joint
components; head of ulna, ulnar notch of radius, triangular articular disc
movements; pronation, supination

Question 2

radiocarpal joint

Answer 2

synovial condyloid
ligaments; palmar radiocarpal, dorsal radiocarpal, distal ulnar collateral, distal radial collateral
movements; flexion/extension, radial-ulnar deviation

Question 3

8 bones of carpus

Answer 3

scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate

Question 4

ulnar (guyuns) canal

Answer 4

between pisiform and hook of hamate. contains ulnar nerve and artery.
ulnar canal syndrome - ‘clawing’ of 4th and 5th digits

Question 5

triangular fibrocartilage complex

Answer 5

load bearing structure between lunate, triquetrum and ulnar head
stabiliser for ulnar aspect of the wrist
at risk for acute or chronic degenerative injury