Os scaphoideum bipartitum

A bipartite scaphoid is a rare example of a divided carpus. There is controversy whether this condition is congenital (i.e. normal variant) or post-traumatic. Bipartite scaphoids may be unilateral or bilateral.

Diagnostic criteria have been proposed :

  • no history of traumatic injury
  • normal appearance of both parts
  • well-defined and rounded cortex, with a small joint-like space intervening
  • no scaphotrapeziotrapezoidal or radioscaphoid osteoarthritis

Differential diagnosis

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