5 Common Foot and Ankle Cysts

Finding a lump or bump on your foot can be concerning. While not all are serious, understanding the different types of foot and ankle cysts can better prompt patients to visit a trusted podiatry office like ours at PodiatryCare, PC, and the Heel Pain Center. Today, we’ll dive into 5 of the most common cysts and discuss their causes and symptoms.

Ganglion Cysts

Notice a visible lump that fluctuates in size? It may be a ganglion cyst. These non-cancerous, fluid-filled sacs often hover around tendons or joints of the foot. Their exact cause is unknown, but they may develop due to physical trauma, repetitive irritation, or degeneration of the joints and tendons.

They are usually painless, but note that discomfort, pressure, or even nerve irritation is sometimes present.

Plantar Fibromas

Another type of growth (sometimes mistaken for a cyst) is a plantar fibroma. These are benign, fibrous nodules that develop within the tissues at the bottom of your foot. You may feel some arch pain, especially when walking or standing, and the nodule itself can be tender to the touch.

While not technically cysts, as they are solid tissue growths, they can present as firm, palpable lumps in the arch. The cause is not fully understood but may involve genetics or minor trauma.

Epidermal Inclusion Cysts

Also benign, these cysts form just beneath the skin and are filled with the protein keratin. They often result from blocked hair follicles or skin trauma and cause a small, round, and often movable lump.

While they can occur anywhere on the foot or ankle, they are more common in areas prone to friction. Symptoms such as redness, pain, and swelling are usually minimal unless the cyst becomes inflamed or infected.

Synovial Cysts

Less commonly, synovial cysts can develop in the foot and ankle. These cysts are also fluid-filled and arise from the synovial membrane, which lines joints and tendons. They are like ganglion cysts in their fluid content but are more directly connected to an underlying joint issue. Arthritis can sometimes contribute to their formation and, as such, can mimic their symptoms.

Mucous Cysts

Like synovial cysts, these typically appear on the toes, often near the nail fold or at the joint closest to the tip of the toe. They are also linked to underlying osteoarthritis in the joint and cause synovial fluid leakage, which can be clear or slightly cloudy. Mucous cysts may cause pain or pressure, especially with shoe wear.

If you notice any unusual lumps or bumps on your foot or ankle, it's essential to consult a podiatrist for a proper diagnosis. While many cysts are benign, a thorough examination can rule out other potential issues and guide appropriate management.

At PodiatryCare, PC, and the Heel Pain Center, we treat a wide variety of foot and ankle ailments. Dr. Matthew Tschudy, Dr. Rebecca Wiesner, Dr. Kristen Winters, Dr. Laura Vander Poel, and the rest of our team are ready to serve our Hartford County patients. To schedule an appointment at our Enfield location, call (860) 741-3041; for an appointment at our South Windsor location, call (860) 644-6525.