Skip to main content
. 2018 Mar;188(3):715–727. doi: 10.1016/j.ajpath.2017.11.018

Table 2.

Allen's Classification of Fracture Healing

Grade Description
0 Pseudoarthrosis formation
1 Incomplete cartilaginous union
2 Complete cartilaginous union
3 Incomplete bony union
4 Complete bony union