Score: Malone classification
Use: Intra-articular distal radius injuries
Type I
Undisplaced fracture with minimal comminution
Type II
"Die punch" fracture with moderate to severe displacement
Type IIa: Reducible (closed)
Type IIb: Irreducible (requires an open reduction)
Type III
A spike fragment is present. Requires closed or limited open reduction. Associated nerve or tendon injury common.
Type IV
Wide separation of the intra-articular fragments. Open reduction is always necessary.
Type V
Explosion fracture with severe comminution, transverse split and rotational displacementReference
Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008