As of the latest update, Google Chrome and Microsoft Edge have made a breaking change to how file uploads are handled. Once your system installs this update, you will not be able to upload new images. Please use another browser until we can get it fixed.

Salter-Harris fracture classification (mnemonic)

Useful mnemonics for remembering the Salter-Harris classification system are:

  • SALTR
  • SMACK

Fortunately, this is also the order of prognosis (from best to worse)

Mnemonics

SALTR
  • 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: ruined or rammed (type V)
SMACK
  • S: slipped (type I)
  • M: metaphyseal (type II)
  • A: articular-epiphyseal (type III)
  • C: complete-metaphysis and epiphysis (type IV)
  • K: krushed! (type V)
Share article

Article information

rID: 2001
Section: Mnemonics
Synonyms or Alternate Spellings:
  • SALTR (mnemonic)
  • SMACK (mnemonic)
  • Salter-Harris (mnemonic)

Support Radiopaedia and see fewer ads

Cases and figures

  • Figure 1: Salter Harris classification
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.