LIGAMENTS
Anterior
Posterior
Medial
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Blueberries
The proximal insertion of the ulnar collateral ligament is at the distal undersurface of the epithroclea, not at the tip.
1 cup
Sugar
Ulnar collateral
The anterior fascicle goes from the distal part of the distal surface of the epitrochlea to the sublime tubercle of the ulna.
The posterior fascicle runs from the distal surface epithroclea to the medial border of the sigmoid notch of the ulna.
Medial collateral ligament
The transverse fascicle spans the anterior and posterior fascicles at their distal insertion
3 cups
Blueberries
The proximal insertion of the ulnar collateral ligament is at the distal undersurface of the epithroclea, not at the tip.
Ulnar collateral
The anterior fascicle goes from the distal part of the distal surface of the epitrochlea to the sublime tubercle of the ulna.
The posterior fascicle runs from the distal surface epithroclea to the medial border of the sigmoid notch of the ulna.
Medial collateral ligament
The transverse fascicle spans the anterior and posterior fascicles at their distal insertion
Lateral
3 cups
Blueberries
Ulnar collateral
The lateral collateral ligament goes from the epicondyle to the cresta supinatoris.
As the radius is slightly anterior in relation to the ulna, it runs posterior to the head of the radius.
This is why we can better see it from posterior.
It does not insert at the head of the radius, but rather sends some fibers which form an expansion to the annular ligament. This is why the tension of the radial collateral ligament does not change whether the forearm is pronated or supinated, which would be rather inefficient.
The lateral collateral ligament is isometric, as the tension is constant throughout flexion and extension.