Unusual osteochondroma of the foot and ankle.

Osteochondroma, also known as osteocartilaginous exostosis, is by far the most commonly occurring benign bone neoplasm. Its occurrence is the most frequent of all osseous tumors found in the foot. A basic review is discussed along with two case reports. The first case describes an osteochondroma of the third metatarsal shaft that became symptomatic during boot camp. The second case presents an atypical osteochondroma arising from the posterior aspect of the talus.