Causes of fluid on the knee

Swollen knee image causes of fluid on the kner

Causes of fluid on the knee

Have you experienced a build up of fluid on the knee and want to know the causes of fluid on the knee?

I’m speaking from experience of having excess fluid build-up around my left knee.

I wanted to know the causes of fluid on my knee.

In this article I will explain what fluid on the knee symptoms are and how to get rid of fluid on the knee.

Why does a swollen knee occur?

In many cases excess fluid builds up in and around the knee joint causing the knee to become swollen, several people may refer to this condition as “water on the knee” the medical term is effusion of the knee joint.

The knee becomes swollen because of a trauma an underlying disease or condition or because of overuse of the knee joint.

To make a diagnosis your doctor will need to take a sample of the fluid to test it for any infections, diseases or injury.

Fluid on the knee removal

To reduce the pain and stiffness your doctor may remove some of the fluid associated with the swelling. When the fluid test results come back your doctor will know the primary cause of the swollen knee and appropriate treatment can start.


These are exactly the symptoms that I had.


While your knee joint holds excess fluid, you may find that after sitting down you may not be able to bend your knee easily without pain.


You may have puffiness around your knee, it will look much bigger than the other knee

Pain: The pain will occur when you try to stand up from a sitting position, you may feel pain just under the kneecap and right around to the back of the knee.

 You may also experience pain as you lie in bed especially if you lie with your bad knee in a bent position, the symptoms are a direct result of the causes of fluid on the knee.

When should you see a doctor?

Some people will try over the counter painkillers and rest to bring the swelling down. Over the counter medications didn’t work for me, once I knew the exact causes of fluid on the knee I discovered that Serrapeptase a natural enzyme could do the trick.

What did work for me was an enzyme called Serrapeptase, I took two 250,000 (strongest dose) in the morning on an empty stomach and two in the evening just before bed.

My knee used to look like the one in the picture but after one week of this enzyme treatment (safe to take without side effects) the swelling has gone done and I have free movement again (amazing) Serrapeptase reduces swelling and removes pain.

Click here to try Serrapeptase.

See you doctor if

  • Resting your knee or prescribed or over the counter medications don’t work.
  • The pain and swelling keeps coming back


You may have an acl injury, in other words you have torn the anterior cruciate ligament leading to inflammation, swelling and pain

You may have a torn meniscus, the cartilage in the knee becomes torn, the meniscus has an important function because it acts as a shock absorber as well as distributing the load around the knee.

It also helps to distribute fluid around the knee area. The meniscus may tear following a trauma, degeneration of the knee or injury.

Knee injury causes of fluid on the knee

Knee Injuries

Any kind of harm to your knee may lead to an accumulation of excess fluid around the knee joint, knee injuries are a one of the common causes of fluid on the knee, these are examples of knee injuries;

  • Cartilage tear (meniscus)
  • A broken bone
  • Knee irritation from overuse
  • Torn ligament, in particular the acl
  • The ageing process

Diseases and conditions that cause inflammation

these would include:

  • Bursitis
  • Infection
  • Osteoarthritis
  • Gout
  • Rheumatoid arthritis
  • Tumour
  • Cyst
  • Calcium pyrophosphate deposition (CPPD) disease (type of arthritis)

Risk factors

  • Ageing: As we age the likelihood of getting a swollen knee increase
  • Obesity; People that carry excess weight are more likely to develop a swollen knee, added stress on the knee joint can lead to knee degeneration and swelling. Obesity also adds to the risk of developing arthritis one of the more common reasons for swollen knee.
  • Sports people: People that take part in sports where there is a lot of knee movement, sports like soccer, basketball and athletics are more than likely to develop knee injuries that causes fluid on the knee.

Swollen knee issues

Having a swollen knee can lead to:

  • Fluid filled sac: The accumulation of fluid in the knee may lead to the creation of a Baker’s cyst at the back of your knee, the cyst will be swollen and very painful.

The pain and swelling will subside with icing and by pressing on it, in some cases the fluid will have to be removed (cyst aspiration)

  • A loss of muscle: Fluid around the knee area can be harmful to the muscle action leading to a wastage and weakling of the thigh muscle

Typically, you will get a swollen knee because of an injury to the knee or an underlying chronic condition, the best advice to manage your health overall and prevent an injury happening is:

  • Knee muscle strengthen exercises
  • Choose wisely low impact exercises such as swimming and water aerobics
  • Watch what you eat, by being overweight places pressure on the knee joints.

Avoid wear and tear on the knee joint.

My recommendation for a swollen knee and pain is Serrapeptase Enzyme 250,000 IU