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Department of Podiatry

Subungual Exostoses

Subungual exostoses are bony projections which arise from the dorsal surface of the distal phalanx, most commonly of the hallux. They tend to be painful due to the pressure applied to the nail bed and plate. They are commonly osteochondromas which have identical radiographical and pathological features and never metastasize. Surgical exicision is common and is a very effective mode of treatment.

Large subungual exostosis on lateral view (above left) and marked increase in density as visualised from A-P shot (above right)
Subungual exostoses

Content Approved by: Head of Podiatry

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Last Updated: July 8th, 2003