This is the first in a series of episodes where I review some classic articles and classifications.
The Outerbridge classification was first presented in JBJS-B in 1961
The classification is as follows:
1 - Softening and swelling
2 - Fragmentation and fissuring less than 1/2 inch diameter
3 - Fragmentation and fissuring greater than 1/2 inch diameter
4 - exposed bone