Name of the Procedure:

Injection procedure for contrast knee arthrography or contrast-enhanced CT/MRI knee arthrography.

Summary

This procedure involves injecting a contrast dye into the knee joint to make the structures within the knee more visible on imaging scans such as CT or MRI. It helps in diagnosing various knee problems by providing a detailed view of the joint, including cartilage, ligaments, and soft tissues.

Purpose

The procedure is used to diagnose underlying knee conditions, such as tears, lesions, or degeneration of cartilage and ligaments. The goal is to gain a clearer image of the knee structures to guide treatment planning.

Indications

• Persistent knee pain or swelling.
• Suspected ligament, cartilage, or meniscus tears.
• Unexplained knee joint dysfunction.
• Need for detailed anatomical visualization before surgery.

Preparation

• Fasting may be required for a few hours before the procedure.
• Adjustments to medications, particularly blood thinners, as directed by your physician.
• Pre-procedure imaging or diagnostic tests may be necessary to guide the injection.

Procedure Description

1. The patient will lie down, and the knee area will be sterilized.
2. Local anesthesia may be applied to numb the injection site.
3. A needle is inserted into the knee joint space using imaging guidance like fluoroscopy or ultrasound.
4. Contrast dye is injected into the joint space.
5. The patient is then taken for CT or MRI scans to capture detailed images of the knee.

Duration

The entire procedure typically takes about 30 minutes to 1 hour, including preparation and imaging time.

Setting

The procedure is usually performed in a hospital radiology department or outpatient imaging center.

Personnel

A radiologist or an interventional radiologist will conduct the procedure, assisted by radiology technologists and nurses. An anesthesiologist may be involved if sedation is required.

Risks and Complications

• Minor discomfort or pain at the injection site.
• Risk of infection or bleeding.
• Allergic reaction to the contrast dye, which is rare.
• Temporary increase in knee pain or swelling.

Benefits

Immediate detailed imaging results that can significantly aid in diagnosing knee conditions. The enhanced clarity helps in determining the best course of treatment.

Recovery

• Post-procedure instructions may include rest and avoiding strenuous activity for 24-48 hours.
• Ice packs may be applied to the injection site to reduce pain or swelling.
• Follow-up appointments will be scheduled to discuss the imaging results.

Alternatives

• Non-contrast MRI or CT scans which may not be as detailed.
• Ultrasound imaging.
• Conservative treatments such as physical therapy or medication before opting for diagnostic imaging.

Patient Experience

During the procedure, the patient may feel mild discomfort or pressure from the needle insertion. Afterward, some soreness or swelling in the knee is common. Pain management includes over-the-counter pain relievers and ice application. Most patients experience relief of any minor discomfort within a few days.