Trapezoid fractures are an uncommon carpal fracture. They typically occur as the result of axial force through the second metacarpal.
They account for ~0.4% of all carpal fractures 1.
The trapezoid is in a relatively immobile, and protected location hence the rarity of an isolated fracture. Given the wedged shape and weaker dorsal ligamentous support, fractures will dislocate in the dorsal direction 2. It is often associated with a second metacarpal fracture.
Treatment and prognosis
Treatment varies from conservative management to open reduction internal fixation, failure to recognize can lead to functional problems such as decreased grasp power 2.
- 1. Rita M. Sadowski, Richard D. Montilla. Rare Isolated Trapezoid Fracture: A Case Report:. (2008) HAND. 3 (4): 372-4. doi:10.1007/s11552-008-9100-8 - Pubmed
- 2. Afifi N, Lu JJ. A rare isolated trapezoid fracture. (2011) The western journal of emergency medicine. 12 (4): 523-4. doi:10.5811/westjem.2011.3.2202 - Pubmed
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