In a lateral digit radiograph, what is used to separate the affected digit from the others?

• A. Tape
• B. Elastic band
• C. Gauze
• D. Rubber tubing

Answer: (A)

In a lateral digit radiograph, you want to keep the affected finger in true lateral position and prevent neighboring digits from overlapping it. The separation needs to be secure but gentle, to avoid distortion or discomfort. Tape fits this role best because it is quick to apply, lightweight, and can hold the adjacent digits away without adding bulk or changing the image with shadows. It also comes off easily after the exam without leaving residues that could irritate the skin.

Other materials can be less reliable: elastic bands may tighten and cause compression or movement; gauze can bunch or shift, making separation unstable; rubber tubing can slip or press unevenly, potentially creating artifacts or discomfort. Tape provides dependable, clean separation so the radiograph clearly shows the finger’s anatomy.