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What angle is required to demonstrate the radial head and neck using the Coyle method?

  1. 15 degrees towards the shoulder

  2. 30 degrees towards the shoulder

  3. 45 degrees towards the shoulder

  4. 60 degrees towards the shoulder

The correct answer is: 45 degrees towards the shoulder

The Coyle method requires an angle of 45 degrees towards the shoulder to adequately demonstrate the radial head and neck. This specific angling is crucial because it allows for the optimal visualization of the anatomy of the elbow joint, particularly in cases of trauma or suspected injury to the radial head. The method effectively projects the radial head into a position where it can be clearly seen, minimizing superimposition from adjacent structures. Proper angulation is essential for accurate diagnosis and assessment in radiographic imaging of the elbow.