A knee MRI scans only the knee(s) specified by the referrer. You can have a unilateral MRI for one knee or a bilateral MRI that images both; bilateral exams take longer and may cost more. Clinicians sometimes order bilateral scans for comparison or when both knees are symptomatic. Confirm with the radiology team which knee(s) and whether contrast will be used.

An MRI of both knees typically takes about 30–60 minutes. A non-contrast scan usually lasts around 30–45 minutes; if contrast is used or extra sequences are needed, total time including injection, setup, and positioning can reach about 60 minutes. Allow extra time for check-in and radiographer instructions.

A knee joint MRI is a non‑invasive imaging test that uses magnetic fields and radio waves to produce detailed cross‑sectional images of the knee’s bones, cartilage, ligaments (ACL, PCL), tendons, menisci and surrounding soft tissues. It helps diagnose tears, arthritis, infections, tumors and post‑surgical complications. No ionizing radiation is used; exams last ~20–45 minutes and may require contrast.

Most knee MRIs are done with you lying on the table and only the knee placed into a short scanner tunnel (a “bore”) or a dedicated knee coil — your head and most of your body usually stay outside. Some centers offer open or extremity scanners if you’re claustrophobic. The technologist communicates during the scan; it’s noisy, so you’ll receive ear protection and instructions beforehand.

Knee MRI costs vary widely by country and provider: in the US self‑pay prices typically range about $400–$3,500 (insured patients pay copays or negotiated amounts); in private UK clinics about £200–£700 while NHS scans are free for eligible patients; in India private centers often charge roughly INR 1,000–6,000. Final price depends on location, facility type, use of contrast, and insurance.

Yes, an MRI can show knee arthritis by visualizing cartilage loss, bone marrow lesions, subchondral bone changes, synovitis, osteophytes, and meniscal or ligament damage. It is more sensitive than X‑ray for early or soft‑tissue changes and inflammatory arthritis, though imaging findings may not always match symptoms. MRI is used when X‑rays are inconclusive or for surgical planning.