Knee pain is a common issue that can occur for many reasons. A Knee X-Ray can help determine the cause of your knee pain by providing a detailed image of the bones and joint structure. With a clear picture of the inside of your knee, doctors are able to diagnose the problem and provide you with the best possible treatment plan.
A Knee X-Ray is a common diagnostic tool used to assess the structure and function of the knee joint. It involves taking images of the knee using a specialised X-Ray machine that can penetrate bone and tissue to visualise any potential issues — including bone fractures, arthritis, ligament tears, and abnormalities in joint alignment.
The procedure is painless and takes just a few minutes to complete. A radiologist interprets the images and reports the results to your physician for further evaluation and treatment planning. A Knee X-Ray is often used alongside a physical examination and other imaging tests such as an MRI or CT scan for a more comprehensive assessment.
A Knee X-Ray may be necessary for a number of reasons, including: to diagnose a bone fracture such as a tibial plateau fracture (a break in the upper part of the shinbone just below the knee, often caused by high-impact trauma) or a patella fracture (a break in the kneecap caused by trauma or overuse); to detect degenerative conditions such as osteoarthritis or rheumatoid arthritis; to reveal abnormalities or foreign objects within the joint; to assess for injury or inflammation of soft tissue structures surrounding the knee; and to rule out fractures in cases of severe knee pain or swelling.
Very little preparation is required for a Knee X-Ray. Avoid wearing clothing with metal accents such as zippers or buttons, and remove any jewellery or accessories on or near the knee being imaged. Inform your doctor of any medications you are taking, as some can affect image clarity. Follow the technician's instructions throughout the imaging process to ensure the clearest possible results.
On arrival, the technologist will ask you to remove any metal objects that may interfere with image quality — including wallets, jewellery, belts, and shoes with metal buckles. You will then be asked to lie on your back on the X-Ray table, and the technologist will position your leg so the knee joint aligns with the machine. A lead apron will be placed over your pelvis to protect you from radiation exposure.
Once the images have been acquired, the technologist will assist you off the table. The radiologist will interpret the images and send a report to your referring physician, who will discuss the findings with you at a follow-up appointment. You can return to your normal activities immediately after the procedure — no special care or recovery time is required.
Painless procedure
No sedation or anaesthesia is needed, and you can return to normal activities immediately after the scan.
Safe
The amount of radiation used is very low, and the benefits of the information gained far outweigh the risks of minimal radiation exposure.
Informative
Provides valuable insight into the condition of your joint, aiding in the diagnosis of fractures, arthritis, and other conditions.
Readily available
X-Ray machines are available in most hospitals and clinics, making them a convenient diagnostic option.
Minimal preparation
No extensive preparation is required — simply remove any metal objects before the scan.
A Knee X-Ray can show signs of arthritis, gout, infection, injury, or other conditions. It can also help rule out problems such as fractures that may be contributing to your pain. It is usually one of the first steps in diagnosing knee pain.
A Knee X-Ray can show some signs of ligament or cartilage injury, but it cannot always detect soft tissue injuries such as a meniscus tear. An MRI or other imaging test may be required to diagnose these types of injuries.
Yes — a Knee X-Ray can show signs of arthritis, which is a common cause of knee pain. It can also reveal signs of joint damage such as bone spurs or cysts.
No — Knee X-Rays are generally safe and use a very low dose of radiation. The risk of health problems from this test is very low. If you are pregnant and have concerns about radiation exposure, speak with your doctor before proceeding.
A Knee X-Ray is a quick and easy test, usually taking less than 10 minutes. Please allow approximately 30 minutes for your appointment to account for paperwork and preparation time.
Your doctor will usually review your X-Ray results with you at your next appointment. If you have any questions, ask your doctor or the X-Ray technologist — they can often provide you with a copy of your X-Ray to take home.
Yes — there are no special dietary restrictions before a Knee X-Ray. You can eat and drink as normal.
This depends on the reason for your X-Ray. If you have a knee injury, your doctor may want to see how it looks when you bear weight, in which case a standing X-Ray would be preferred. If you are being assessed for arthritis, a lying-down X-Ray may be more appropriate. Your doctor will advise which is best for your situation.
Yes — X-Rays of both knees can usually be taken simultaneously. This is often done when there is pain in both knees, allowing your doctor to compare the two and look for any differences.