<unk>  Types There are nine types of<unk> s; types I to V as described by Robert B<unk>  and W Robert<unk>  in 1963, and the rarer types VI to IX which have been added subsequently: * Type I – transverse fracture through the growth plate (also referred to as the "physis"): 6% incidence * Type II – A fracture through the growth plate and the metaphysis, sparing the epiphysis: 75% incidence, takes approximately 12-90 weeks or more in the spine to heal. * Type III – A fracture through growth plate and epiphysis, sparing the metaphysis: 8% incidence * Type IV – A fracture through all three elements of the bone, the growth plate, metaphysis, and epiphysis: 10% incidence * Type V – A compression fracture of the growth plate (resulting in a decrease in the perceived space between the epiphysis and metaphysis on x-ray): 1% incidence * Type VI – Injury to the peripheral portion of the physis and a resultant bony bridge formation which may produce an angular deformity (added in 1969 by Mercer Rang) * Type VII – Isolated injury of the epiphyseal plate (VII–IX added in 1982 by JA Ogden) * Type VIII – Isolated injury of the metaphysis with possible impairment of endochondral ossification * Type IX – Injury of the periosteum which may impair intramembranous ossification<unk>  mnemonic for classification The mnemonic<unk> " can be used to help remember the first five types. N.B.: This mnemonic requires the reader to imagine the bones as long bones, with the epiphyses at the base. * I – S = Slip (separated or straight across). Fracture of the cartilage of the physis (growth plate) * II – A = Above. The fracture lies above the physis, or Away from the joint. * III – L = Lower. The fracture is below the physis in the epiphysis. * IV – TE = Through Everything. The fracture is through the metaphysis, physis, and epiphysis. * V – R = Rammed (crushed). The physis has been crushed.<unk> natively,<unk>  can be used for the first 6 types, as above but adding Type V — 'E' for 'Everything' or 'Epiphysis' and Type VI — 'R' for 'Ring'.
Salter–Harris fracture
Jefferson fracture
Essex-Lopresti fracture
Holdsworth fracture
Smith's fracture
Holstein–Lewis fracture
Malgaigne's fracture
Pott's fracture