When to See a Doctor
See a doctor if swelling is sudden, severe, warm, or follows an injury.
Frequently Asked Questions
What is a knee effusion?
A knee effusion is swelling in the knee joint caused by excess fluid. It can result from injury, inflammation, or underlying conditions. The knee may appear swollen and feel tight.
What causes a knee effusion?
It can be caused by injuries like ligament tears, meniscus damage, or arthritis. Infection and inflammatory conditions can also lead to fluid buildup. The cause determines the treatment.
What are the symptoms?
Symptoms include swelling, stiffness, and reduced range of motion. The knee may feel tight or full. Pain can vary depending on the underlying cause.
How is it treated?
Treatment focuses on addressing the underlying cause of the fluid buildup. Rest, ice, and anti-inflammatory medications may help. In some cases, fluid may be drained for relief or diagnosis.
When can I return to activity?
Return depends on the underlying cause of the effusion. Activity should be limited until swelling and pain improve. A gradual return is recommended once the knee is functioning normally.