Synovial Cysts: symptoms, causes and treatments

Updated 11/14/2019
Synovial Cyst, University Foot and Ankle Institute

What is a Synovial Cyst?

 

A Synovial Cyst, also known as Gideon’s Disease or Bible Bump, is a small, fluid-filled sac or pouch that develops over a tendon or joint on the top of the foot.

 

The benign mass under the skin may or may not be painful.

 

The size of the sac or cyst can change with activity and may disappear for some time, only to recur. The mass is often soft, but with time it may become firmer to the touch.

What causes synovial cysts?

During your examination, your doctor will explain to you why you have developed a synovial cyst. Though the cause of the mass is sometimes unknown, the cyst may be caused by trauma from repetitive activities such as sports. Genetic risk factors include osteoarthritis and rheumatoid arthritis.

 

Treating a synovial cyst

If the mass is not causing pain and is relatively small, your doctor will likely take a watch-and-wait approach, asking you to return to the office to monitor the cyst. If there is pain, limitation of motion or difficulty wearing shoes, immediate treatment may be necessary.

 

Non-surgical treatment options for a synovial cyst


Patients typically find pain relief with non-invasive treatment options, including:

  • Ice, especially if pain is related to activity
  • Pain medications including non-steroidal anti-inflammatory medications (Advil) or acetaminophen
  • Rest

In some cases, non-invasive treatment options are not successful and a more aggressive treatment plan is necessary.

 

Non-invasive treatment options

The least-aggressive form of treatment is called aspiration (drainage). The area is numbed with local anesthetic and a large-gauge needle is used to remove the fluid.

 

Often a corticosteroid, and sometimes Hyalauroindase (a dissolving enzyme), is injected to reduce the likelihood of recurrence. While aspiration is quite effective, synovial cysts often reoccur.

 

Surgical treatment options for a synovial cyst

Depending on the size and location of the cyst, excision surgery may be an appropriate treatment option. This procedure is done in one our on site surgical centers. Rest and reduction of activities may be required after the procedure.

 

The excision procedure has a significantly higher success rate than aspiration, although complications such as joint stiffness, scar formation, and infection are possible.

 

UFAI, the best choice for cyst treatment


It is important to have a synovial cyst properly evaluated by a medical professional to eliminate a more serious medical condition. Our podiatrists are experts in the identifying and treating cysts of the foot and ankle. We offer the latest technologies available to ensure an accurate diagnosis and proper treatment.

  • Foot and Ankle Surgeon at University Foot and Ankle Institute
    Dr. Ryan Carter DPM, University Foot and Ankle Institute, Foot and Ankle Surgeon

    Dr. Ryan Carter attended the University of Missouri, Columbia where he received his bachelor’s degree in Biology. He then moved to Glendale, Arizona where he received his medical degree at Midwestern University Arizona School of Podiatric Medicine. While attending school, he was the President of the Midwestern University student chapter of the American Academy of Podiatric Sports Medicine.

     

    Upon completing residency at Kaiser Permanente in Santa Clara, California, Dr. Carter received an additional year of training at the Silicon Valley Reconstructive Foot and Ankle Fellowship with Palo Alto Medical Foundation. During his time there he continued to train in sports medicine, arthroscopy, foot and ankle trauma, minimally invasive surgery, and total ankle replacement.

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