Plantar Fibroma: Symptoms, Causes, Tests, and Treatments

Plantar fibroma is a rare disease affecting the foot, with fewer than 200,000 cases reported in the US each year. These fibromas may be painful and distressing for some individuals, while others may not even notice them.

Plantar fibromas are small, benign nodules less than an inch in size, typically appearing on the arch of the foot. Many people don't notice these growths unless they experience symptoms such as foot pain or pressure when wearing shoes. Individuals aged 40-60 with diabetes, epilepsy, or alcohol use disorders are more likely to develop fibromas.

Symptoms

In the early stages, fibromas often go unnoticed. However, as they progress, they can cause aches and pains in the foot when wearing shoes or heels. The pain typically occurs around the arch, and the fibroma may feel like a small stone in your shoe, increasing pressure on the foot. Upon examination, a firm lump resembling a tiny marble embedded in the skin may be visible, with the skin curving around it.

Causes

The exact cause of plantar fibroma is still unknown, and research is ongoing. Some experts believe that it may result from scar tissue formed during the healing of small tears in the plantar fascia due to trauma, foot fractures, or injuries caused by poorly fitted footwear without proper orthotic inserts.

Tests for Plantar Fibroma

There are no specific tests for plantar fibroma, but a physical examination by a healthcare provider can help diagnose the condition. This usually involves comparing your feet and feeling them for growth.

If you need additional tests, your provider may suggest one or more of the following:

• Magnetic resonance imaging (MRI) helps differentiate plantar fibroma from cysts or other benign growths by providing detailed images of the foot's internal structures.
• Ultrasound offers real-time visualization of the soft tissues surrounding the growth, allowing for a better understanding of the fibroma's impact on surrounding structures.
• X-rays reveal any potential bone damage or abnormalities around the growth while also allowing healthcare providers to rule out cancerous conditions.

Treatment Options

Although there is no definitive treatment, managing symptoms and improving the weight-bearing capacity of the foot can help.

This can be done in the following ways:

• Steroid injections offer temporary pain relief, but they do not cure the condition, and the fibroma may recur after treatment.
• Stretching exercises can help alleviate pain by maintaining the flexibility of the plantar fascia and reducing tension around the nodule.
• Shoe inserts provide support and cushioning, effectively redistributing pressure to relieve pain by keeping weight off the fibroma.

Even though these treatment options are commonly recommended, the exact treatment will depend on your specific condition. Always ask your healthcare provider for the best option available for you.

Managing Plantar Fibroma

Despite being rare, plantar fibromas can be disabling and cause difficulty in walking, standing, and performing load-bearing activities. However, lifestyle modifications, proper foot assessments, and supportive, cushioned insoles can make a significant difference. Investing in high-quality insoles that offer support in all the right places can be a game changer.

» Check out our list of best insoles for Plantar Fibroma and find the product that suits your needs.