What should you know about an MRI of the knee joint?

A knee MRI can help assess internal structures that are difficult to evaluate with a physical examination alone. It may show a meniscus or ligament injury, cartilage wear, bone bruising, fluid, tendon irritation or changes in muscles and surrounding tissues. The images are taken in several planes so the radiologist can follow the joint’s anatomy. A scan can identify a visible change, but it cannot decide by itself whether that change explains your pain. Symptoms, examination findings, the injury mechanism and your ability to move all shape the diagnosis.

Tell the imaging team about metal in your body, implanted devices, previous operations, kidney disease, allergies and possible pregnancy. Wear clothing without metal and follow local instructions about food or contrast. During the scan, keep the knee still and tell the team if discomfort makes that difficult. Afterward, review the report with the clinician who requested it. Ask which finding matters, which is incidental and whether the plan involves rehabilitation, observation or another assessment. You can learn more about a [3T MRI Scanner](/technology/3t-mri-scanner/) if the referral mentions that type of equipment.

Get urgent assessment for a severely injured knee that is deformed, rapidly swelling, or unable to bear weight. A hot, red knee with fever, new numbness or a cold foot also needs prompt attention. These signs can require immediate examination even if an MRI has been arranged or recently completed.

Ask what the referral is looking for, whether contrast is required, how soon the report will be reviewed, and which activities are reasonable while you wait. Ask how the result fits with your examination.