CT Both Knee Joints

A Computed Tomography (CT) scan of both knee joints is a non-invasive diagnostic tool that uses X-rays to create detailed images of the bones, soft tissues, and blood vessels in the knee region. It plays a vital role in evaluating a variety of knee-related disorders like arthritis, injuries, tumors, and infections.

The knee joint, one of the largest and most complex joints in the human body, is crucial for various movements such as walking, running, and jumping. It consists of the lower end of the femur (thighbone), the upper end of the tibia (shinbone), and the patella (kneecap). A CT scan provides comprehensive, three-dimensional images of these components, which can help physicians in detecting any abnormalities and devising an appropriate treatment plan.

Specific Instructions:

• Fasting : There's typically no need to fast prior to a CT scan of the knee joints unless contrast material is used. If contrast is required, your doctor will provide you with specific instructions.

• Allergies : If a contrast material is to be used, it's crucial to inform your doctor about any known allergies, particularly to iodine, as this can cause an allergic reaction.

• Medication : Continue your regular medications unless your doctor advises otherwise. If you are diabetic and taking metformin, you might be asked to stop it temporarily if a contrast material is used.

• Clothing : Wear comfortable, loose-fitting clothing. You may be asked to change into a hospital gown for the procedure. Also, try to avoid wearing jewelry or clothes with metal, as they can interfere with the imaging.

• Pregnancy : If you are pregnant or suspect you might be, inform your doctor as the radiation exposure from the scan can potentially harm the fetus.

• Kidney function : If you're having the scan with contrast and have a history of kidney disease, inform your doctor, as the dye can sometimes cause kidney problems.

What should I expect during a CT scan of both knee joints?

You will be asked to lie down on a narrow table, which slides into the CT scanner. The scanner will rotate around your knees, taking images from various angles. The procedure is painless, but you'll need to remain still to ensure clear images.

How long does the scan take?

The actual scanning typically takes only a few minutes. However, the entire procedure, including preparation and post-scan processes, can take up to an hour.

Is the procedure painful?

No, the procedure itself is painless. However, you might feel discomfort from lying still on the examination table.

What if I'm claustrophobic?

The CT scanner is not as confining as an MRI scanner. If you're still concerned, discuss this with your doctor beforehand. In some cases, a mild sedative may be provided.

How soon will I get the results?

Your doctor will receive the results within a few days, and will discuss them with you at a follow-up appointment.

What factors can affect the results of my scan?

The presence of any metallic objects or implants in your body, including surgical screws or plates, can affect the images. It's essential to inform your doctor and the technologist performing the scan about any such objects beforehand.

What should I do after the procedure?

You can usually return to your normal activities immediately after the procedure. If you were given contrast, you may be advised to drink plenty of fluids to help your kidneys remove the contrast from your body.

What if the scan shows something abnormal?

If the scan shows something abnormal, your doctor will discuss this with you and plan any necessary treatment or further tests. You might be referred to an orthopedic surgeon for further consultation.

Are there any risks or side effects?

CT scans use a small amount of radiation, which carries a very low risk of causing cancer. The use of contrast material can cause allergic reactions or kidney problems in rare cases.

How often should I have this test?

The frequency of the test depends on your medical condition. Your doctor will advise you based on your specific circumstances.

Understanding your knee health is essential for maintaining a high quality of life and movement. With CT scans, your doctor can diagnose and treat any knee issues with precision and effectiveness. Always follow your doctor's advice and instructions to ensure the best possible outcome from your scan.