The higher the classification, the higher the likelihood of growth abnormalities
If physis<unk> missed may lead to premature closure and bone growth arrest
It was previously taught that ligaments are stronger than bones in kids (and<unk>  were more likely than sprains), however newer studies (to date in ankles) contradict that assumption
S 1 - Slipped (through physis/growth plate)
A 2 - Above (physis with metaphysis<unk> 
L 3 - Lower (physis  with epiphysis<unk> 
T 4 - Through (physis, metaphysis and epiphysis<unk> 
R 5 - Rammed (growth plate crushed)
Salter-Harris fractures
Sprain
Jefferson fracture
Contusion
Smith's fracture
Other fracture
Capitate fracture
Essex-Lopresti fracture