Salter-Harris classification is used to describe physeal fractures. The classification can be remembered using the SALTR mnemonic:

• S: slipped (type I)
• A: above or away from joint (type II)
• L: lower (type III)
• T: through or transverse or together (type IV)
• R: rammed or ruined (type V)

Type V fractures are oftentimes occult on initial radiographs. They are usually diagnosed late during follow-up when there is a bone deformity or growth arrest.

In the illustration, the metaphysis is drawn above the epiphysis so the SALTR mnemonic can be properly used.