Arthrogram

Arthrogram

An arthrogram is a type of medical imaging used to evaluate the condition of joints. It involves the injection of a contrast medium into the joint space to enhance the visibility of the joint structures on imaging studies such as X-rays, MRI, or CT scans. Arthrograms are particularly useful for diagnosing joint abnormalities, tears, and other pathologies that may not be visible on standard imaging.

An arthrogram of the left shoulder showing contrast in the joint space

Procedure

The arthrogram procedure typically begins with the patient lying on an examination table. The skin over the joint is cleaned and sterilized to prevent infection. A local anesthetic is administered to numb the area. Using fluoroscopic guidance, a needle is inserted into the joint space. Once the needle is correctly positioned, a contrast medium is injected. This contrast helps to outline the joint structures, such as the cartilage, ligaments, and tendons, making them more visible on the imaging study.

After the injection, the patient may be asked to move the joint to distribute the contrast evenly. Imaging is then performed using X-ray, MRI, or CT, depending on the specific requirements of the examination. The choice of imaging modality depends on the joint being examined and the suspected pathology.

Indications

Arthrograms are indicated for a variety of joint-related issues, including:

• Suspected tears in the rotator cuff or labrum of the shoulder
• Evaluation of the meniscus in the knee
• Assessment of the hip joint for labral tears
• Investigation of chronic joint pain or unexplained joint symptoms
• Pre-surgical planning for joint repair or replacement

Risks and Complications

While arthrograms are generally safe, there are some risks and potential complications associated with the procedure. These include:

• Allergic reaction to the contrast medium
• Infection at the injection site
• Bleeding or bruising
• Temporary increase in joint pain

Patients are advised to inform their healthcare provider of any allergies, especially to contrast materials, and to report any unusual symptoms following the procedure.

Post-Procedure Care

After an arthrogram, patients may experience mild discomfort or swelling in the joint. It is recommended to rest the joint and apply ice to reduce swelling. Over-the-counter pain relievers may be used to manage discomfort. Patients should follow any specific instructions provided by their healthcare provider regarding activity restrictions or follow-up care.

Related Pages

• Magnetic resonance imaging
• Computed tomography
• X-ray
• Joint pain
• Contrast medium