Radiocarpal Joint

Question 1

What type of joint is RC?

Answer 1

condyloid joint

concave radius and TFCC w/ complex scaphoid/lunate

full ulnar deviation also triquetrum

Question 2

What movements of RC?

Answer 2

Flex/Ext., Ab/ADD

Question 3

Midcarpal joints

Answer 3

proximal and distal rows of carpals

Question 4

Medial compartment of mid carpal joint

Answer 4

convex capitate/hamate—–concave fossa created by scaphoid/lunate and triquetrum

Question 5

Lateral compartment of mid carpal joint?

Answer 5

convex scaphoid—-concave trapezium/trapezoid

Question 6

What are four Radiocarpal ligaments?

Answer 6

1. Radial collateral
2. Ulnar collateral
3. palmar radiocarpal
4. dorsal radiocarpal

Question 7

Radial collateral

Answer 7

radial styloid–scaphoid and trapezium

taut in ulnar deviation and extension

Question 8

Ulnar collateral

Answer 8

ulnar styloid–triquetrum, 5th MC

taut in radial deviation

Question 9

Palmar Radiocarpal

Answer 9

radius—capitate, lunate, scaphoid

prevents extension, taut in neutral, thicker than DRCL

Question 10

Dorsal Radiocarpal

Answer 10

radius—scaphoid, lunate and triquetrum

prevents flexion