They are often small (less than half an inch), but can grow steadily to reach sizes of two inches or more. Occurring as single or multiple lesions, plantar fibromas typically present along the medial border of the plantar fascia. They are benign, and composed of dense, fibrous tissue found in the ligaments. Rapid-growing and multi-planar fibromas are considered plantar fibromatosis.
Many patients with plantar fibromas do not show symptoms; and when they do, it is often only a vague discomfort from “walking on a lump”.