| Salter Classification | |
| I | Shearing separation of epiphysis from metaphysis |
| II | Small segment of metaphysis taken with epiphysis (Thurston-Holland fragment) |
| III | Intra-articular epiphyseal without epiphyseal plate injury |
| IV | Vertical through metaphysis, epiphyseal plate and epiphysis |
| V | Crush Injury of epiphysis |
85% are type I or II - good prognosis
Collateral ligament avulsion injuries are usually type II or III
Mallet fractures are usually type I