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Paediatrics
intermediate
X-Type

Blount Disease - Langenskiöld Classification and Treatment Algorithm

Lower Limb Deformity

A 3-year-old obese boy is referred for progressive bilateral bowing of his legs. His parents report he began walking early at 9 months. Examination shows marked genu varum with internal tibial torsion bilaterally. AP standing radiographs show metaphyseal-diaphyseal angle (Drennan angle) of 14° on the right and 16° on the left, with medial tibial metaphyseal beaking and irregularity of the medial proximal tibial physis. The lateral physis appears normal. The paediatric orthopaedic surgeon discusses the diagnosis and treatment options including bracing versus surgical intervention. Regarding Blount disease (tibia vara) classification and treatment:

Mark each as TRUE or FALSE

A

Blount disease is a growth disturbance of the MEDIAL proximal tibial physis causing progressive varu...

B

Differentiating infantile Blount from physiologic genu varum before age 2 is challenging; a metaphys...

C

All varus deformity in children is Blount disease; physiologic bowing never resolves spontaneously; ...

D

Treatment of infantile Blount depends on age and stage: bracing (KAFO) may be effective in Stage I-I...

E

Adolescent Blount disease typically requires SURGICAL treatment as bracing is ineffective; guided gr...

Answer the questions to see explanations

Click T (True) or F (False) for each option