Presentation
High-speed MVA. Incidental finding.
Patient Data
Age: 25
Gender: Male
From the case:
Bipartite hallux sesamoid
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Frontal
No fracture or malalignment. Incidental finding of bipartite lateral hallux sesamoid and bone island in third middle phalanx.
Case Discussion
The key differential for this cause is a fracture of the hallux sesamoid. A bipartite hallux sesamoid, as in this case, has the following features:
- transverse lucency
- smooth, well-corticated margins
- two bony fragments are greater in size than the other hallux sesamoid
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