Lateral epicondylitis is a condition that causes pain and tenderness at the prominence on the outer part of the elbow. The condition occurs as a result of overusing the forearm muscles that straighten and raise the hand and wrist. 

lateral epicondyle

 The medial epicondyle of the humerus is an epicondyle of the humerus bone of the upper arm in humans. It is larger and more prominent than the lateral epicondyle and is directed slightly more posteriorly in the anatomical position. N 

medial epicondyle

 The olecranon is the near end of the ulna, the bone in the forearm, and it forms the pointed portion of the elbow. bony projection of the ulna bone that can be felt at the elbow. Hook-like in shape, it is the structure that curves around the bottom of the humerus bone in the upper arm and encapsulates the elbow joint. It also is the site of attachment for several muscles of the arm. 

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