This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Elbow injuries, Subject name: Orthopaedics
Tennis elbow is 
Select and explain. 
A. Inflammation of lateral epicondyle of humerus, B. Inflammation of medial epicondyle of humerus, C. Avulsion injury of head of radius, D. Avulsion injury of olecranon process
A: Inflammation of lateral epicondyle of humerus
Answer: A: Inflammation of lateral epicondyle of humerus 
Explanation: Tennis elbow is a condition characterised by pain and tenderness at the lateral epicondyle of the humerus due to non-specific inflammation at the origin of the extensor muscles of the forearm.Maheswari 5th edition Pg: 302