Citation, DOI and article data
The os styloideum is an accessory ossicle of the wrist, situated between the 2nd and 3rd metacarpal bases.
Given its position next to the 2nd and 3rd metacarpal bases, it may be mistaken for a fracture, though this should not occur if an adequate lateral radiograph is assessed 2.
It may be implicated in degenerative conditions such as osteoarthritis with localized pain occurring at this region 2.
- 1. R. Shane Tubbs, Marios Loukas, Mohammadali M. Shoja. Bergman's Comprehensive Encyclopedia of Human Anatomic Variation. ISBN: 9781118430354
- 2. Stein JM, Cook TS, Simonson S, Kim W. Normal and variant anatomy of the wrist and hand on MR imaging. Magnetic resonance imaging clinics of North America. 19 (3): 595-608; ix. doi:10.1016/j.mric.2011.05.007 - Pubmed