Do you suffer from a swollen, stiff knee and feel like there's excess fluid in it? Fluid in the knee, also known as a "swollen knee," can have various causes and can significantly restrict your range of motion. In this blog post, we explain: how to recognize fluid in your knee, what the causes can be and how physiotherapy can help drain the fluid.
What is fluid in the knee?
Fluid in the knee, also called knee swelling or knee effusion, means that too much fluid accumulates in or around the knee joint. This is usually the body's response to irritation, overuse, or an underlying condition.
How do you recognize fluid in your knee?
Fluid in the knee is often a sign that something is wrong with the knee joint. These are the most common symptoms:
✅ Swelling and a swollen knee – Your knee seems larger than normal and feels swollen.
✅ Stiffness and limited range of motion – The swelling may make it more difficult to bend and straighten the knee.
✅ Pain or a feeling of pressure – The fluid can cause pressure, causing you to experience pain or a heavy feeling in the knee.
✅ Heat or redness – If the fluid is caused by an inflammation, the skin around the knee may feel warm and become red.
Do you have these symptoms? Then it is wise to have the cause investigated. Schedule an appointment today. an appointment in or come by during our free walk-in consultation.
Causes of fluid in the knee
There are several reasons why your knee retains fluid. The most common causes are:
🔹 Overload or injury – A fall, a twist or intense exercise can cause swelling.
🔹 Arthrosis – Wear and tear of the cartilage can lead to fluid build-up in the knee.
🔹 Inflammations – For example, due to rheumatism or gout.
🔹 Meniscus injury – Damage to the meniscus can cause fluid retention.
🔹 Bursitis (inflammation of the bursa) – Inflammation of the bursa in the knee can cause swelling and pain.
Want to know what's causing your knee pain? A physiotherapist can examine your knee and develop a personalized treatment plan.
How can you drain fluid from the knee?
If you have fluid in your knee, it's important to rest the joint and support the body's recovery. You can do a lot yourself:
What helps with a swollen knee?
✅ Cooling with ice: 15–20 minutes at a time, several times a day
✅ Raise your leg: this promotes the drainage of moisture
✅ Compression: a knee brace or bandage reduces swelling
✅ Light movement: walking or cycling at a leisurely pace stimulates blood circulation
✅ Sufficient hydration: drinking plenty of fluids supports the lymphatic system
✅ PhysiotherapyTargeted therapy helps reduce fluid and strengthen the knee.
Physiotherapy for fluid in the knee
A physiotherapist can help you drain fluid from your knee and prevent further problems. Various techniques may be used during treatment:
💡 Manual therapy – Specific mobilization techniques improve blood circulation and help drain fluid.
💡 Exercise therapy – Aimed at strengthening the muscles around the knee to reduce overload.
💡 Lymphatic drainage – A special massage technique that helps to remove excess fluid.
Frequently asked questions about fluid in the knee
Common causes include overuse, wear and tear (arthrosis), inflammation, meniscus problems or injuries.
Not always, but it is a sign that something is wrong in the joint. Persistent swelling requires examination.
That depends on the cause. With rest and targeted treatment, the swelling can subside within a few days to weeks.
Yes, but only within your pain threshold. Light exercise is actually good for fluid drainage.
The physiotherapist investigates the cause and uses techniques to drain the fluid, restore function and prevent recurrence.
Make an appointment at Fysi
Do you suffer from fluid in your knee and would you like specific advice and treatment? At Fysi, our specialized physiotherapists are happy to help youWe offer customized treatments so you can quickly regain your mobility.
📍 Create today an appointment or come visit us free walk-in consultation at one of our practices in Tilburg.