What is a Baker's cyst?
A Baker's cyst is a small, fluid-filled lump that appears behind the knee. It is usually not dangerous, but it should be checked by a doctor.
A Baker's cyst forms when the knee joint or surrounding tissue becomes damaged and excess fluid leaks out (drains).
In addition to the fluid-filled lump, you may notice the following symptoms:
- Knee pain;
- Stiffness;
- Limited range of motion;
- Difficulty bending the knee;
- Swelling.
Some people have no symptoms and are diagnosed during a routine exam or when diagnosing a completely different cause for a complaint.
Keep in mind that anything that damages the knee joint and causes swelling can be a trigger for a Baker's cyst. The most common causes are arthritis of the knee and trauma to the limb.
Risk groups include:
- People between the ages of 35 and 70;
- Athletes;
- People who put a lot of strain on their knees due to a hobby or job;
- A history of arthritis.
Source:
https://my.clevelandclinic.org/health/diseases/15183-bakers-cyst
