Should I have surgery to remove my Baker's cyst?

Why the cyst is rarely the target

A Baker's cyst is a symptom of fluid production inside the knee. Cutting out the sac without addressing what makes the fluid tends to let it re-form, and open surgery behind the knee works close to important nerves and blood vessels. So surgeons focus on the joint first and the cyst second.

When surgery may be considered

• A meniscus tear or loose body that is causing catching, locking or recurrent swelling, with a cyst that keeps refilling
• A large cyst that limits bending and work despite physiotherapy, injection or drainage
• Repeated leaking or bursting of the cyst
• Advanced arthritis where the knee itself needs treatment, which in some patients means knee replacement

What the operation usually involves

Most surgery is done by knee arthroscopy through small keyhole incisions. The surgeon treats the cause, such as trimming or repairing a torn meniscus or removing a loose body. In selected cases, the opening between the joint and the cyst can be widened or closed and the cyst wall treated from inside the knee, which reduces the chance of recurrence. Open removal through an incision behind the knee is reserved for unusual cases.

After arthroscopy, most patients walk the same day, return to desk work within days to a couple of weeks, and build up activity with physiotherapy over the following weeks. Manual work and sport take longer, depending on what was done inside the knee.

Making the decision

A good decision weighs your symptoms, what the MRI shows inside the knee, your age, your activity and the alternatives. At Aman Hospital in Doha, Dr. Gelber reviews your scans, explains whether surgery is likely to help, and is equally clear when it is not. If you have been told elsewhere that you need an operation, a second opinion is reasonable. For cost and coverage, check with Aman Hospital and your insurer.