An extremity X-ray is an imaging test that uses small amounts of radiation to produce images of the bones in your limbs (extremities). This includes your: Fingers and hands Toes and feet Wrists and forearms Elbows and upper arms Ankles and lower legs Knees and thighs How it Works The process is similar to other X-rays. You'll be positioned so the specific extremity is between the X-ray machine and a detector. The machine emits a small dose of radiation that passes through your body. Dense structures like bone block more radiation and appear white on the image, while soft tissues appear in shades of gray. What it Shows Extremity X-rays are used to diagnose a variety of conditions, including: Fractures (broken bones) Dislocations Arthritis Infections Bone tumors Foreign objects The Procedure The procedure is usually quick and straightforward: Preparation: You may be asked to remove jewelry or clothing that could interfere with the images. Positioning: The technician will position your extremity for the X-ray. Imaging: The technician will take images from different angles to provide a complete view. Duration: The entire procedure usually takes only a few minutes.