noun
- the longer and thicker of the two bones in the human forearm, located on the side opposite the thumb
Usage: anatomy
Examples
- The doctor examined the X-ray to check for a fracture in the ulna.
- She broke her ulna when she fell off her bicycle.
- The ulna extends from the elbow to the wrist on the pinky side of the arm.
- Physical therapy helped strengthen the muscles around his injured ulna.
- The ulna is longer than the radius, the other bone in the forearm.
- An ulnar fracture can affect grip strength and wrist movement.