Adolescent Blount disease
Classic history and presentation: Late-onset or adolescent Blount disease usually presents in patients older than 10 years.
- Age – Seen in patients older than 10 years.
- Sex / gender – Male predominance.
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.
M92.519 – Juvenile osteochondrosis of proximal tibia, unspecified leg
79353000 – Tibia vara
- Persistent physiological varus deformity
- Rickets of vitamin D deficiency
- Renal osteodystrophy
- Vitamin D-resistant (hypophosphatemic) rickets
- Metaphyseal dysostosis (Schmid, Jansen types)
- Spondyloepiphyseal or metaphyseal / epiphyseal dysplasias
- Thrombocytopenia-absent radius syndrome
- Focal fibrocartilaginous defect
- Proximal tibial physeal injury (eg, infection, fracture, irradiation)