Score: Green-O'Brien classification
Use: First metacarpal fractures
Type I
Bennet's fracture (intra-articular fracture at the base)
Type II
Rolando's fracture (comminution at the base)
Type III
IIIA: transverse extra-articular
IIIB: oblique extra-articular
Type IV
Type II Salter Harris epiphyseal fracture (paediatric)Reference
Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008