Baker’s Cyst

The Knee Center
at Modern Orthopedics of New Jersey

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72 Route 17 North
Paramus, NJ 07652


2025 Hamburg Turnpike
STE C, Wayne, NJ 07470


3799 US-46
#207, Parsippany, NJ 07054

Baker’s Cyst

Baker’s Cyst Treatment and Surgery in Wayne, Parsippany & Paramus, NJ

A Baker’s cyst is a swelling at the back of the knee caused by outpouching of the normal synovial fluid found in the knee joint.

A Baker’s cyst, also known as a popliteal cyst, is a swelling at the back of the knee caused by outpouching of the normal synovial fluid found in the knee joint. They are usually visible as a soft bulge behind the knee and are more prominent when standing. Normally, these cysts do not cause symptoms and are nontender. However, knee stiffness or pain can occur especially when the knee is in full extension. Knee arthritis is the most common cause of Baker’s cysts, but these cysts can also occur when associated with injury to the knee such as meniscal tears. These cysts usually do not need any formal treatment, especially if they do not cause any discomfort. If the cyst is associated with pain and discomfort, your doctor may perform an ultrasound-guided aspiration to drain the cyst. Sometimes just draining the cyst is not a definitive treatment, and these cysts can recur. In these cases, a more formal surgical approach may be indicated to completely resolve the source of the cyst (i.e. knee arthroscopy, please see “Knee Arthroscopy” under our Treatments section for more information on this). It is not uncommon for a Baker’s cyst to rupture on its own, leaving a painless bruising under the skin usually seen down at the level of the ankle.

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Modern Orthopaedics specializes in conditions and treatments of the shoulder, elbow, hand/wrist, hip, knee and foot/ankle with locations in Wayne, Parsippany, and Paramus, NJ.


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