Quick answer
CT arthrography is a joint CT scan performed after contrast medium is injected directly into the joint. It shows the cartilage, menisci, labrum and ligaments in detail, and is the reference examination for many intra-articular lesions.
🦴 What is it?
CT arthrography is a joint CT scan after injection of contrast medium directly into the joint. It shows the cartilage, menisci, labrum and ligaments in detail. It is the reference examination for many intra-articular lesions.
📋 How to prepare
Bring your previous imaging (MRI, X-rays) of the joint.
No fasting is required.
Tell us about any anticoagulant treatment and any allergy to iodinated contrast medium.
You can drive after the examination.
▶️ How does it go?
Intra-articular injection under radiological guidance after local anaesthesia. The needle is thin and causes little pain.
You may feel a sensation of pressure in the joint.
Immediately afterwards, the CT acquisition takes a few minutes.
✅ After the examination
The joint may be slightly painful for 24 to 48 hours, which is normal and temporary.
Avoid strenuous effort for 24 hours. Paracetamol may be taken if needed.
Report available within 2 to 5 working days.
📄 Patient information leaflet (in French): Download the PDF →
❓ Frequently asked questions
What is CT arthrography?
Is the intra-articular injection painful?
Can I walk normally after CT arthrography of the knee or hip?
✓ Why you can trust this page
Written by the Radiology team at Cochin Hospital AP-HP, Paris Cité University. Medical review by a radiologist of the department. Last updated: July 2026.