The back of the elbow, formed by the tip of the ulna which curves around the lower end of the humorous.
A curve projecting part at the end of the ulna at the elbow, which gives rise to a painful tingling sensation if hit by accident.
Projection of the ulna (one of the lower arm bones) that forms the outer bump of the elbow and fits into the fossa of the humerus (upper arm bone) when the arm is extended; also called olecranon process.
A large process of the ulna projecting behind the elbow joint and forming the bony prominence of the elbow. In treating a fracture of the olecranon, it is important to prevent spasm of the triceps muscle (to avoid separation of the fracture fragments by placing the arm in a sling or bandaging the arm to the side). The fragments may have to be wired.
The bone prominence situated at the upper extremity of the ulna (the inner forearm bone), creating the elbow’s apex.
The top part of the ulna at the elbow joint is where the olecranon is located. The ulnar nerve runs along its inner side, and when hit, it gives a “pins and needles” feeling. This is also known as the funny bone.