Plantar fibromatosis represents a relatively uncommon benign lesion of soft tissue. It is most often found to invest the central and medial portions of the plantar fascia and commonly occurs in conjunction with other fibrous proliferate disorders. The authors present a detailed review of the literature concerning this usually unencapsulated fibrous growth. A unique case involving a relatively large encapsulated mass found to undergo dorsal extension into the plantar musculature is also presented.