Radius Flashcards
What type of bone is the Radius
Long Bone
Which end is wider
Distal end
How many joints are associated with the Radius
5
Name the joints associated with the Radius (5)
Humeroradial Proximal Radioulnar Mid-Radioulnar Distal Radioulnar Radiocarpal
What are the articulating surfaces of the Humeroradial Joint
Capitulum of Humerus
Head of Radius
What are the articulating surfaces of the Proximal Radioulnar Joint
Head of the Radius
Radial notch of Ulna
What structure forms the Mid-Radioulnar Joint
Interosseous Membrane
What are the articulating surfaces of the Distal Radioulnar Joint
Head of the Ulna
Ulnar Notch of Radius
What are the articulating surfaces of the Radiocarpal Joint
Distal end of Radius with Scaphoid and Lunate
Associated Muscle Actions (6)
Wrist Flexors (Flexor Digitorum Superficialis)
Wrist Extensors (Extensor Pollicis Brevis)
Radial Deviation (Flexor Carpi Radialis)
Supination (Biceps Brachii)
Pronation (Pronator Teres)
Elbow Flexors (Brachioradialis)
How to distinguish between Anterior and Posterior View
Posterior view has the Dorsal/Lister’s Tubercle (Distal end)
Anterior view has the Radial/Bicipital Tuberosity (Proximal end)
What are the 6 Palpable Landmarks
Circumference of Head Neck Radial/Bicipital Tuberosity Radial Styloid Process Dorsal/Lister's Tubercle Grooves for Tendons x 4
Function of the Circumference of the Radial Head
Joint Surface (Proximal Radioulnar Jt)
Function of Neck of the Radius
Lig. Attachment (Annular Ligament)
Function of Radial/Bicipital Tuberosity
Muscle Attachment (Biceps Brachii)
Function of the Radial Styloid Process
Muscle Attachment (Brachioradialis) Lig. Attachment (Radial Collateral Ligament)
Function of Dorsal/Lister’s Tubercle
Pulley for Muscle (Extensor Pollicis Longus)
Location of the Grooves for Tendons
2 on each side of the Dorsal Tubercle (distal end, posterior side)
What are the 6 Non-Palpable Landmarks
Head (Fovea Capitis) Interosseous Border Pronator Tubercle Anterior Oblique Line Distal Articular Surface Ulnar Notch
Function of Head (Fovea Capitis)
Articular surface that receives Capitulum of Humerus
Location and Function of the Interosseus Border
L: Medial Border
F: Attachement for Interosseous Membrane
Location and Function of Pronator Tubercle
L: Mid-Lateral Shaft
F: Muscle Attachment (Pronator Teres)
Location and Function of Anterior Oblique Line
L: Runs from Radial Tuberosity to Pronator Tubercle
F: Muscle Attachment (Flexor Digitorum Superficialis)
Lig. Attachment (Oblique Ligament)
Function of Distal Articular Surface
Receives Scaphoid and Lunate in Radiocarpal Jt
Location and Function of Ulnar Notch
L: Distal end, Medial side
F: Receives Head of the Ulna in Distal Radioulnar Jt
