Lumpy Bumpy Foot

There are many conditions that can cause a lump or bump on the foot. Some examples are bone spurs, ganglion cysts, bunions, abscess and various tumors. One such “tumor” is the plantar fibroma. These are benign growths in the substance of the plantar fascia, which as a ligament that supports the arch. This ligament is close to the surface of the skin on the sole of the foot. The lumps can be felt when walking and can often be seen through the skin. The lesions are usually small, less than 1cm typically. They can occur singly or can be multiple. Often they are not particularly painful. They can become inflamed from weight bearing pressure and become painful or if large enough can press on other deeper structures in the foot resulting in pain. Diagnosis is made by history and clinical examination. Ultrasound can be helpful to differentiate between the solid fibroma and a fluid filled cyst beneath the skin. Plantar fibromas usually grow very slowly. Fibromas that are asymptomatic can be observed. Symptomatic fibromas can be treated by cortisone injection using ultrasound guidance to reduce local inflammation and shrink the size of the mass. Alternatively topical anti inflammatory creams or a compound cream containing the medication verapamil can be used effectively. Surgical removal of the fibroma can be considered if symptoms persist despite conservative care. Solitary fibromas can be removed under local anesthetic through a small incision on the bottom of the foot. Large or multiple fibromas may require partial or total plantar fascia removal for cure. If you have any questions about a lump or bump on your foot, give us a call. We will find out what it is and give you the best options for treatment

Paul Betschart, DPM Dr. Betschart has over 26 years of experience in treating patients of all ages with all kinds of foot and ankle conditions. His mission is to provide you with helpful information about foot and ankle issues and the latest developments in healthcare.

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