Osteochondroma of the Sesamoid Bone: A Case Report.

Osteochondromas are the most common benign bone tumors; however, they are rarely found in the foot. To date, only three cases involving the sesamoid bone have been reported in the literature. We report the case of a 14-year-old female who presented with a 1.5-year history of foot pain and impaired gait. Clinical evaluation and imaging-including plain radiography and magnetic resonance imaging-identified a lesion in the medial sesamoid bone. The diagnosis of osteochondroma was confirmed histologically, and the lesion was excised with preservation of the sesamoid bone. Postoperatively, the patient's pain resolved completely, and her gait returned to normal within two months. We recommend surgical excision of symptomatic osteochondromas of the sesamoid bone to alleviate pain and restore functional gait.