Ultrasonography of Plantar Fibromatosis: Updated Case Series, Review of the Literature, and a Novel Descriptive Appearance Termed the "Comb Sign".

The purpose of this series is to review the appearance of plantar fibromatosis with high-resolution ultrasonography (US) and highlight a new imaging sign termed the "comb sign." A retrospective study was performed for patients with a clinical diagnosis of plantar fibromatosis. Charts of 43 patients (age range, 26-77 years; mean age, 54 years) were reviewed to gather patient demographics and symptoms.