Forearm

Question 1

Describe the anatomy of the radius

Answer 1

Rounded P head, concave sup
neck and shaft
Distally - ulnar notch convex post, Listers tubercle

Question 2

Describe the anatomy of the Ulna

Answer 2

Pros end - post olecranon, ant coronoid process surrounding trochlear notch
Dist - shaft narrows, small rounded head, downward stolid process

Question 3

Describe the Superior radioulna joint

Answer 3

Fibro-osseous ring - radial notch of ulna and annular ligament
Quadrate ligament between bones
Annular Ligament horseshoe shape round radial head

Question 4

Describe the inferior radioulnar joint

Answer 4

Weak loose fibrous capsule - UN of radius to ulna
Synovial membrane
Interosseus membrane

Question 5

Describe Pronator Teres

Answer 5

Pronation, weak flexer
Orig- med epi, pronator ridge of ulnar
Insert- mid lat radius
Median nerve C8- T1

Question 6

Describe Pronator Quadratus

Answer 6

Pronation
Orig- distal ant ulna
Insert- distal post, lat,ant radius
Radial nerve C5-6

Question 7

Describe the Supinator

Answer 7

Supination
Orig- lat epi, LCL, AL, sup crest ulna
Insert- post, lat, ant aspect prod 1/3 radius