Radius

Question 1

Anatomical location

Answer 1

Long lateral bone in the forearm

Question 2

Articulations

Answer 2

Elbow joint - partly formed by articulation between head of radius and capitulum of humerus
Proximal radioulnar joint - articulation between radial head and radial notch of ulna
Wrist joint - articulation between distal end of radius and carpal bones
Distal radioulnar joint - articulation between ulnar notch and head of ulna

Question 3

Proximal region

Answer 3

Head - disk shaped, concave articulating surface, thicker medially where it takes part in proximal radioulnar joint
Neck - narrow area of bone, lies between radial head and radial tuberosity
Radial tuberosity - bony projection which serves as attachment place of biceps brachii

Question 4

Shaft

Answer 4

Expands in diameter as it moves distally
Triangular shape with 3 surfaces and 3 borders
Middle and lateral surface - small roughening which attaches pronator teres

Question 5

Distal region

Answer 5

Lateral side - projects distally as styloid process
Medial surface - ulnar notch, articulates with ulna head
Distal surface - two facets for articulation with scaphoid and lunate carpal bones to make up wrist bone

Question 6

Colles’ Fracture

Answer 6

Most common radial fracture
Fall onto outstretched hand
Fractures distal radius
Wrist and hand displaced posteriorly (dinner fork deformity)

Question 7

Fractures of radial head

Answer 7

Fall onto an outstretched hand

Radial head forced into capitulum of humerus causing fracture

Question 8

Smith’s Fracture

Answer 8

Falling onto the back of the hand

Distal fragment placed anteriorly

Question 9

Galeazzi’s Fracture

Answer 9

Fracture of distal radius

Ulna head dislocated at distal radioulnar joint