Which anatomical site is associated with tennis elbow?

Which anatomical site is associated with tennis elbow?

• A. Medial epicondyle
• B. Olecranon
• C. Lateral epicondyle
• D. Capitellum

Answer: (C)

Tennis elbow is a tendinopathy of the common extensor tendon at the lateral epicondyle of the humerus. Repetitive wrist extension and gripping stress the extensor muscles, especially the extensor carpi radialis brevis, causing microtears and pain at the outer elbow. This lateral epicondyle location differentiates it from golfer’s elbow, which involves the medial epicondyle. The olecranon lies at the back of the elbow where the triceps inserts, and issues there would present differently, while the capitellum is a distal humeral articulation not typically the source of tennis elbow.

Tennis elbow is a tendinopathy of the common extensor tendon at the lateral epicondyle of the humerus. Repetitive wrist extension and gripping stress the extensor muscles, especially the extensor carpi radialis brevis, causing microtears and pain at the outer elbow. This lateral epicondyle location differentiates it from golfer’s elbow, which involves the medial epicondyle. The olecranon lies at the back of the elbow where the triceps inserts, and issues there would present differently, while the capitellum is a distal humeral articulation not typically the source of tennis elbow.