A patient reports lateral elbow pain with resisted wrist extension and gripping, with normal cervical screening. Which structure is MOST likely involved?

• 1 The distal biceps tendon at its radial insertion
• 2 The olecranon bursa on the posterior elbow
• 3 The common extensor tendon origin at the lateral epicondyle ✓ 정답
• 4 The ulnar collateral ligament complex on the medial side of the elbow

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