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Adolescent Blount disease
Other Resources UpToDate PubMed

Adolescent Blount disease

Contributors: Aron Sulovari BA, Katie Rizzone MD, MPH
Other Resources UpToDate PubMed

Synopsis

Causes / typical injury mechanism: Blount disease is a growth disorder of the medial proximal tibial physis and epiphysis that results in genu varum malalignment deformity.

Classic history and presentation: Late-onset or adolescent Blount disease usually presents in patients older than 10 years.

Prevalence:
  • Age – Seen in patients older than 10 years.
  • Sex / gender – Male predominance.
Risk factors: Obesity, Afro-Caribbean ethnicity.

Pathophysiology: The exact pathophysiology is unknown. It may occur due to excessive mechanical loading as a larger thigh size increases the varus-inducing load, and there may be genetic susceptibility factors.

Codes

ICD10CM:
M92.519 – Juvenile osteochondrosis of proximal tibia, unspecified leg

SNOMEDCT:
79353000 – Tibia vara

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Last Reviewed:01/20/2021
Last Updated:02/04/2021
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Adolescent Blount disease
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