Knee Effusion: Why Is Your Knee Swollen and What Can You Do About It?
Published: May 05, 2024
Medically reviewed by Oghenefejiro Okifo | MD, Harvard Medical School | Henry Ford Hospital - Detroit, MI on May 5th, 2024.
Knee effusion, or fluid buildup in the knee joint, can be a sign of various conditions. Understanding its causes and detection can lead to proper treatment.
Contents
What Causes Knee Effusion?
Knee effusion can result from injury, arthritis, or infection. Common causes include meniscus tears, ligament injuries, and osteoarthritis. In some cases, it may be due to gout or rheumatoid arthritis. Identifying the underlying cause is crucial for effective treatment.
How Do Doctors Detect Knee Effusion?
Doctors use several techniques to check for knee effusion. They may look for a visible bulge or swelling around the knee. The 'ballottement test' involves pressing on the kneecap to feel for fluid movement. In some cases, ultrasound may be used for more accurate detection.
Treatment Options for Knee Effusion
Treatment depends on the underlying cause. Rest, ice, and elevation can help reduce swelling. Anti-inflammatory medications may be prescribed. In some cases, draining the fluid (aspiration) might be necessary. Physical therapy can help strengthen the knee and prevent future effusions.
Frequently Asked Questions
Not always, but it often causes discomfort and limits movement.
Minor cases may resolve with rest, but persistent swelling needs medical attention.
Recovery time varies from days to weeks, depending on the cause.
Gentle exercises can help, but consult a doctor first.
Key Takeaways
Knee effusion is a common problem with various causes, and proper diagnosis is key to effective treatment.
Concerned about swelling in your knee? Chat with Doctronic to learn more about knee effusion and potential next steps.Related Articles
References
Hauzeur JP, et al. Comparison between clinical evaluation and ultrasonography in detecting hydrarthrosis of the knee. J Rheumatol 1999; 26:2681.
Hong BY, et al. Detectable threshold of knee effusion by ultrasonography in osteoarthritis patients. Am J Phys Med Rehabil 2011; 90:112.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.