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Structure and Function of the Elbow

The elbow is both a hinge and 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. See a picture of the elbow .

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.

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Antithrombin Deficiency

Important It is possible that the main title of the report Antithrombin Deficiency is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.

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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.

By Healthwise Staff
Primary Medical Reviewer William H. Blahd, Jr., MD, FACEP - Emergency Medicine
Specialist Medical Reviewer H. Michael O'Connor, MD - Emergency Medicine
Last Revised February 16, 2011

WebMD Medical Reference from Healthwise

Last Updated: February 16, 2011
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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