The elbow is both a hinge and a pivot joint that allows a person to bend, extend, and rotate the arm. It connects the end of the upper arm bone (distal humerus) to the bones of the forearm (radius and ulna) with ligaments, tendons, and muscles.
The two bones of the forearm (radius and ulna) fit into the ends of the upper arm bone like a hinge, forming the elbow joint. The upper arm bone (distal humerus) flares out to form the medial and lateral epicondyles. Some of the forearm muscles attach to the upper arm bone.
The olecranon is the large bump of the ulna behind the elbow joint. It forms the bony prominence of the elbow and connects with the triceps muscle of the upper arm.
eMedicineHealth Medical Reference from Healthwise
To learn more visit Healthwise.org
© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Pain Management Resources
- How Well Are You Living With AFib?
- How Well Are You Managing Your MS?
- Soothe Your Child's Cold or Flu