Radio-ulnar joints

Question 1

what are the 3 radio-ulnar joints?

Answer 1

1) Superior Radio-Ulnar
2) Intermediate Radio-Ulnar
3) Inferior Radio-Ulnar

Question 2

what are the articulations for the superior radio-ulnar joint?

Answer 2

radial notch articulates with head of radius

Question 3

what kind of joint is the superior radio-ulnar joint.

Answer 3

synovial, pivot, uni-axial

Question 4

where is the superior radio-ulnar joint contained

Answer 4

inside capsule of elbow joint

Question 5

what ligament is found at the superior radio-ulnar joint?

Answer 5

annular ligament

Question 6

annular ligament

Answer 6

band of fibrous fibres oriented horizontally that wrap around head of radius to provide secure connection between radius and ulna

Question 7

what are the articulations of the intermediate radio-ulnar joint

Answer 7

interosseous border of radius with interosseous border of ulna

Question 8

what type of joint is the intermediate radio-ulnar joint?

Answer 8

fibrous

Question 9

true or false: the intermediate radio-ulnar joint is lax (loose) in pronation

Answer 9

true

Question 10

what are the articulations for the inferior radio-ulnar joint

Answer 10

ulnar notch articulates with head of ulna

Question 11

what type of joint is the inferior radio-ulnar joint?

Answer 11

synovial, pivot, uni-axial

Question 12

what does the loose capsule of the inferior radio-ulnar joint allow

Answer 12

distal radius to swing over ulna in pronation

Question 13

a ______ joins radius and ulna and facilitates movement

Answer 13

articular disc

Question 14

pronation

Answer 14

radial head pivots on capitulum in annular ligament; distal radius sweeps medially over ulna (shaft crosses ulna)