Foot Cysts: What You Need to Know to Recognize and Treat Them

Foot cysts are fluid-filled growths that vary in size, from a few millimeters to several centimeters in diameter. They develop under the skin or in the joints and can be bothersome, sometimes even impairing movement.

These are generally benign growths caused by infection or trauma, and develop relatively quickly. Although they are often harmless, in some cases they can put pressure on surrounding nerves or tissue, causing pain.

Remedies and solutions for treating foot cysts

Some people are more prone to developing cysts, such as those with osteoarthritis, rheumatism, or those who experience repeated orthopedic trauma, such as from competitive sports. The most common cysts are synovial cysts, which form in the joints and contain a fluid that can cause swelling. In rare cases, cysts can also be a symptom of conditions such as gout or other joint problems.

Symptoms of a foot cyst include, in addition to obvious swelling in the affected area, more or less intense discomfort when wearing shoes, tingling or loss of sensation (caused by nerve compression), difficulty moving due to the size of the cyst, and the formation of edema due to the compression of a blood vessel.

Foot cysts tend to form primarily near the tendon sheath. Although less common than those of the hand, they are most commonly located on the outside of the ankle or on the top of the foot. Effective treatment requires determining the cause and severity of the condition.

Foot Cyst: Diagnosis

The first step is to perform diagnostic tests to evaluate the size of the cysts or bursae , their location and any compression of the surrounding structures:

• Ultrasound of the foot and ankle;
• X-ray to detect the presence of osteoarthritis;
• Magnetic resonance imaging to analyze the soft tissue and define the location of the cyst.

Based on the results, appropriate treatment of the foot cyst can be planned.

Small cysts are often asymptomatic and may not require any intervention, reabsorbing spontaneously. Intense and continuous use of the affected joint may contribute to the enlargement of the foot cyst, so it's important to monitor it for any changes.

For larger or painful cysts, anti-inflammatory medications may be used to reduce swelling. If symptoms persist or the cyst doesn't go away on its own, your doctor may decide to surgically remove it or drain the fluid to relieve the pressure.

Surgical removal is a minimally invasive procedure, performed on an outpatient basis. The cyst is removed through a small incision (about 2-3 cm), and the patient must rest for about a week, or at least until the stitches are removed. Alternatively, aspiration of the cyst's contents can be performed, a less advisable procedure as it carries a higher risk of recurrence. In this case, the tract connecting the cyst to the joint or tendon (known as the pedicle) is not closed.

Smarthallux: your solution

In any case, it is advisable to consult an orthopedist to determine the most appropriate treatment and plan a post-operative care program, in order to reduce the risk of recurrence.

For specialist support, book a consultation with Dr. Luigi Manzi for an accurate diagnosis and a personalized treatment plan to relieve severe pain.