An arthrogram is the examination of a joint using X-ray. The most common areas studied include the shoulder, knee, or hip. During the examination, the Radiologist, a physician who specializes in medical diagnosis through X-ray, injects a special dye (contrast medium) into the joint space while watching with the X-ray machine. An X-ray technologist assists in the exam.

A technologist explains the procedure and asks you several questions about your medical history. You lie on your back on the X-ray exam table. The area around your joint is washed with antiseptic soap and covered with a sterile drape or towel. The Radiologist uses a small needle to numb (anesthetize) the area being examined. A special needle is inserted into the joint space and the x-ray dye is administered. This dye coats the structures of the joint making them visible under X-ray. The Radiologist removes the needle. Then he asks you to hold various positions while X-ray films are taken.

Arthrograms require no special preparation. You may be asked to remove some of your clothes and to wear a gown during the exam. Note: Women should always inform their physician or technologist if there is a possibility they are pregnant or breast-feeding.

Your joint may feel tight or slightly painful after the exam. This is normal and should not be cause for concern. Moving or exercising the joint helps this feeling to pass. If you experience prolonged pain following the exam, you should contact your doctor. Depending on your doctor, A CT scan or MRI may follow your arthrogram. Your doctor may leave other instructions for you to follow relative to your health history. A radiologist, a physician specially trained to diagnose conditions and diseases, interprets the results of the exam. The radiologist sends an interpretation of your results to your primary care physician. Your doctor discusses these results with you and explain what they mean in relation to your health.

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