Radius

Question 1

What type of bone is the Radius

Answer 1

Long Bone

Question 2

Which end is wider

Answer 2

Distal end

Question 3

How many joints are associated with the Radius

Answer 3

5

Question 4

Name the joints associated with the Radius (5)

Answer 4

Humeroradial
Proximal Radioulnar
Mid-Radioulnar
Distal Radioulnar
Radiocarpal

Question 5

What are the articulating surfaces of the Humeroradial Joint

Answer 5

Capitulum of Humerus

Head of Radius

Question 6

What are the articulating surfaces of the Proximal Radioulnar Joint

Answer 6

Head of the Radius

Radial notch of Ulna

Question 7

What structure forms the Mid-Radioulnar Joint

Answer 7

Interosseous Membrane

Question 8

What are the articulating surfaces of the Distal Radioulnar Joint

Answer 8

Head of the Ulna

Ulnar Notch of Radius

Question 9

What are the articulating surfaces of the Radiocarpal Joint

Answer 9

Distal end of Radius with Scaphoid and Lunate

Question 10

Associated Muscle Actions (6)

Answer 10

Wrist Flexors (Flexor Digitorum Superficialis)
Wrist Extensors (Extensor Pollicis Brevis)
Radial Deviation (Flexor Carpi Radialis)
Supination (Biceps Brachii)
Pronation (Pronator Teres)
Elbow Flexors (Brachioradialis)

Question 11

How to distinguish between Anterior and Posterior View

Answer 11

Posterior view has the Dorsal/Lister’s Tubercle (Distal end)

Anterior view has the Radial/Bicipital Tuberosity (Proximal end)

Question 12

What are the 6 Palpable Landmarks

Answer 12

Circumference of Head
Neck
Radial/Bicipital Tuberosity
Radial Styloid Process
Dorsal/Lister's Tubercle
Grooves for Tendons x 4

Question 13

Function of the Circumference of the Radial Head

Answer 13

Joint Surface (Proximal Radioulnar Jt)

Question 14

Function of Neck of the Radius

Answer 14

Lig. Attachment (Annular Ligament)

Question 15

Function of Radial/Bicipital Tuberosity

Answer 15

Muscle Attachment (Biceps Brachii)

Question 16

Function of the Radial Styloid Process

Answer 16

Muscle Attachment (Brachioradialis)
Lig. Attachment (Radial Collateral Ligament)

Question 17

Function of Dorsal/Lister’s Tubercle

Answer 17

Pulley for Muscle (Extensor Pollicis Longus)

Question 18

Location of the Grooves for Tendons

Answer 18

2 on each side of the Dorsal Tubercle (distal end, posterior side)

Question 19

What are the 6 Non-Palpable Landmarks

Answer 19

Head (Fovea Capitis)
Interosseous Border
Pronator Tubercle
Anterior Oblique Line
Distal Articular Surface 
Ulnar Notch

Question 20

Function of Head (Fovea Capitis)

Answer 20

Articular surface that receives Capitulum of Humerus

Question 21

Location and Function of the Interosseus Border

Answer 21

L: Medial Border
F: Attachement for Interosseous Membrane

Question 22

Location and Function of Pronator Tubercle

Answer 22

L: Mid-Lateral Shaft
F: Muscle Attachment (Pronator Teres)

Question 23

Location and Function of Anterior Oblique Line

Answer 23

L: Runs from Radial Tuberosity to Pronator Tubercle
F: Muscle Attachment (Flexor Digitorum Superficialis)
Lig. Attachment (Oblique Ligament)

Question 24

Function of Distal Articular Surface

Answer 24

Receives Scaphoid and Lunate in Radiocarpal Jt

Question 25

Location and Function of Ulnar Notch

Answer 25

L: Distal end, Medial side
F: Receives Head of the Ulna in Distal Radioulnar Jt