Subungual Exostosis (bone spur under toenail)

A Subungual Exostosis is more commonly referred to as a bone spur under toenail. They generally are a result of some form of trauma to the toe, forming a bony irregularity or prominence. They are normally treated by surgical removal. Other small tumors called Osteochondromas and Enchondromas can also form in the bone beneath the toenail as well as in other bones in the body.