|An X-ray of the left ankle showing a Salter–Harris type III fracture of medial malleolus. Black arrow demonstrates fracture line while the white arrow marks the growth plate.|
A Salter–Harris fracture or growth plate fracture is a fracture that involves the epiphyseal plate or growth plate of a bone. It is thus a form of child bone fracture. It is a common injury found in children, occurring in 15% of childhood long bone fractures. This type of fracture and its classification system is named for Robert B. Salter and William H. Harris, who created and published this classification system in the Journal of Bone and Joint Surgery in 1963.
- 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 2–3 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
SALTER mnemonic for classification
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.
Alternatively, SALTER 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'.
Fractures in children generally heal relatively fast, but may take several weeks to heal. Most growth plate fractures heal without any lasting effects. Rarely, bridging bone may form across the fracture, causing stunted growth and/or curving. In such cases, the bridging bone may need to be surgically removed. A growth plate fracture may also stimulate growth, causing a longer bone than the corresponding bone on the other side. Therefore, the American Academy of Orthopaedic Surgeons recommends regular follow-up for at least a year after a growth plate fracture.
- "Growth Plate Fractures". orthoinfo.aaos.org, by the American Academy of Orthopaedic Surgeons. Retrieved 2018-02-05. Last Reviewed: October 2014
- Salter RB, Harris WR (1963). "Injuries Involving the Epiphyseal Plate". J Bone Joint Surg Am. 45 (3): 587–622. Archived from the original on October 14, 2013. Retrieved October 13, 2013.
- Daniel J. Cepela, Jason P. Tartaglione, Timothy P. Dooley and Prerana N. Patel. Classifications In Brief: Salter-Harris Classification of Pediatric Physeal Fractures. Clin Orthop Relat Res. 2016 Nov; 474(11): 2531–2537.
- Salter-Harris Fracture Imaging at eMedicine
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- Mirghasemi, Alireza; Mohamadi, Amin; Ara, Ali Majles; Gabaran, Narges Rahimi; Sadat, Mir Mostafa (November 2009). "Completely displaced S-1/S-2 growth plate fracture in an adolescent: case report and review of literature". Journal of Orthopaedic Trauma. 23 (10): 734–738. doi:10.1097/BOT.0b013e3181a23d8b. ISSN 1531-2291. PMID 19858983.
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- Rang, Mercer, ed. (1968). The Growth Plate and Its Disorders. Harcourt Brace/Churchill Livingstone. ISBN 978-0-443-00568-8.
- Ogden, John A. (October 1, 1982). "Skeletal Growth Mechanism Injury Patterns". Journal of Pediatric Orthopaedics. 2 (4): 371–377. doi:10.1097/01241398-198210000-00004. PMID 7142386.
- Davis, Ryan (2006). Blueprints Radiology. ISBN 9781405104609. Retrieved March 3, 2008.
- "Salter-Harris Fractures". OrthoConsult. Retrieved 5 February 2017.
- Tidey, Brian. "Salter-Harris Fractures". Retrieved March 3, 2008.