University of Tennessee Medical Campus
Building C, Suite 480
1932 Alcoa Highway
Knoxville, Tennessee 37920
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Subungal Exotosis (bone spur under toenail)
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Subungal exostosis is more commonly referred to as a bone spur under the toenail. This condition is generally caused by toe trauma, which results in the formation of a bony irregularity or prominence. The normal treatment for subungal exostosis is surgical removal. Other small tumors, called osteochondromas and enchondromas, can also form in the bone beneath the toenail.