Ligaments of elbow+ Radio ulnar JTs

Question 1

Medial Collateral ligament (Ulmar)

Answer 1

Medial epicondyle humerus
coronoid process and olecron of ulna

function: Resist abduction at elbow (valves force- lateral to medial at elbow joint)

Question 2

Lateral Collateral Ligament (Radius)

Answer 2

Lateral epicondyle of humerus
Annular ligament of radius

function: resists adduction at elbow (virus force- medial to lateral)

Question 3

Annular Ligament

Answer 3

Anterior aspect of radial notch of ulna
posterior aspects of radial both of ulna (encircles radial head)

function: holds radial head in radial notch of ulna- allows radial head to rotate during supination/pronation

Question 4

Interosseous Membrane

Answer 4

Length of border of ulna (adjacent to radius)
Length of border of radius (adjacent to ulna)

Ties ulna and radius together whilst still permitting supination and pronation. Attachment site for forearm muscles

Question 5

Triangular ligament (disc.)

Answer 5

Apex- ulnar styloid process
base-ulnar notch of radius

function: binds the ends of radius and ulna together for distal R_U JT. forms articular surface with wrist.