Ulna Osteology

Question 1

Trochlear Notch

Answer 1

Bifurcated notch on the proximal, anterior side of the ulna. Articulates directly with the humerus and rotates in the trochlea of the humerus.

Question 2

Coronoid Process

Answer 2

Protrusion located directly anterior to the trochlear notch. On the proximal portion of the ulna. Site of attachment for the brachialis.

Question 3

Radial Notch

Answer 3

Located laterally to the coronoid process. Articulates directly with the radial head.

Question 4

Ulnar Tuberosity

Answer 4

Depression located on the anterior side of the ulna just distally to the coronoid process.

Question 5

Olecranon Process

Answer 5

The most proximal portion of the ulna. Sits posterior to the articulation of the trochlear notch.

Question 6

Styloid Process

Answer 6

Small protrusion on the distal and posterior aspect of the ulna.

Question 7

Head

Answer 7

Surface on the most distal aspect of the ulna that articulates directly with the carpal bones.