They tend to be painful due to the pressure applied to the nail bed and plate. They can involve destruction of the nail bed. These lesions are not true osteochondromas, rather it is a reactive cartilage metaplasia. The reason it occurs on the dorsal aspect is because the periosteum is loose dorsally but very tightly adherent volarly.
They are distinct from subungual osteochondroma.
Surgical excision is common and is a very effective mode of treatment.
- Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 1-4160-2999-0.
- Suga H, Mukouda M (2005). "Subungual exostosis: a review of 16 cases focusing on postoperative deformity of the nail". Annals of Plastic Surgery. 55 (3): 272–5. doi:10.1097/01.sap.0000174356.70048.b8. PMID 16106166.
- Murphey MD, Choi JJ, Kransdorf MJ, et al: Imaging of osteochondroma: variants and complications with radiologic-pathologic correlation. Radiographics 20:1407-1434, 2000
- Lee SK, Jung MS, Lee YH, Gong HS, Kim JK, Baek GH (2007). "Two distinctive subungual pathologies: subungual exostosis and subungual osteochondroma". Foot & ankle international / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society. 28 (5): 595–601. doi:10.3113/FAI.2007.0595. PMID 17559767.
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