Thumb metacarpal fractures (illustration)

Case contributed by Leonardo Lustosa
Diagnosis not applicable

Illustration of the common patterns of thumb metacarpal fractures

(or 1st metacarpal fractures)

Case Discussion

There are three common types of thumb metacarpal fractures:

These types of fractures are also related to the Green and O'Brien classification system of thumb metacarpal fractures:

  • type I: Bennett fracture
  • type II: Rolando fracture
  • type III: epibasal fracture
    • type IIIA: transverse
    • type IIIB: oblique
  • type IV: epiphyseal fracture

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