![]() ![]() Knee swelling usually develops in one of four ways: When this happens, rather than there being general swelling around the knee there may be swelling behind the knee, side of knee swelling, front knee swelling, swelling below the knee or swelling above the knee. However, it can also occur outside the joint capsule, known as extra-articular swelling, such as with knee bursitis. Often, knee swelling remains inside the knee joint as the joint capsule acts like a barrier, preventing the fluid from escaping. Tends to come on gradually and may come and go, varying in degrees of severity. Knee joint effusion or water on the knee. Swelling comes on rapidly (within minutes). This is normally caused by an injury and the knee The joint capsule acts as container, keeping the fluid within the knee joint.Ī swollen knee usually develops when excess fluid builds up inside the joint capsule and is caused by either: Lubricates the joint so that it can move smoothly, think of it like the oil The capsule contains synovial fluid which nourishes and The knee has a joint capsule, which is like a sac that surrounds the Knee swelling typically indicates a problem somewhere inside the knee joint. Why Does The Knee Swell?Ī swollen knee is a common problem that affects people of all ages. Then we'll go on to look at the best swollen knee treatment options. Here we will look at common knee swelling causes, the different types of swelling and how to tell whether it's serious. In other cases, the swelling may be more obvious and widespread. Small amounts of knee swelling may not be visible but can still cause problems. Knee swelling most commonly develops after an knee injury but does sometimes come on for no obvious reason usually due to an underlying knee condition such as gout. It may even be a sign of a serious medical problem. Swollen knees can develop suddenly or gradually, may be mild or severe and may limit the amount you can move your leg, making walking very uncomfortable. Knee swelling is commonly referred to as "water on the knee" or a "knee joint effusion". Surgery may also be needed to repair any significant damage around the knee joint.A swollen knee is a common problem caused by accumulation of fluid in, or around, the knee joint. In some cases, it may be possible to drain the cyst. The cyst may disappear when the condition causing it has been treated. If you have an underlying condition that's causing your cyst, it's important that the condition is properly managed. A bag of frozen peas wrapped in a tea towel works well as an ice pack. A knee support or an ice pack may also help. Painkillers such as paracetamol and ibuprofen can be used to reduce the swelling and relieve any pain. Treatment will not usually be necessary if you have a Baker's cyst that is not causing any symptoms. ![]() Tests may be recommended to rule out other more serious conditions, such as a tumour, an aneurysm (bulge in a section of a blood vessel) or DVT (deep vein thrombosis) (a blood clot in one of the deep veins of the body). You may need an ultrasound scan or a MRI scan. Your GP will ask you whether you have any associated health conditions, such as arthritis. See your GP if you have a lump behind your knee that's causing problems and does not clear up on its own. They'll usually be able to diagnose a Baker's cyst by examining the back of your knee and asking about your symptoms. gout – a type of arthritis that usually affects the big toe and is caused by a build-up of the waste product uric acid in the bloodīaker's cysts usually develop in people aged 30 to 70, although they can affect people of any age, including children.inflammatory arthritis – including rheumatoid arthritis, which is a less common type of arthritis and is caused by the immune system attacking the joints.osteoarthritis – usually caused by age-related "wear and tear" of joints it particularly affects the knees, hips, hands and big toe.Knee damage caused by a sports injury or a blow to the knee can lead to a Baker's cyst developing.Ī Baker's cyst can also sometimes occur if you have a health condition such as: This can cause sharp pain, swelling and redness in your calf, but redness can be harder to see on brown and black skin. However, sometimes a Baker's cyst may not cause any symptoms other than the fluid-filled swelling at the back of the knee.Ī Baker's cyst can sometimes burst (rupture), resulting in fluid leaking down into your calf. occasional locking or clicking in the knee joint.It's caused when the tissue behind the knee joint becomes swollen and inflamed.
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