A: The majority of cases of Blount disease are bilateral. B: Physiologic genu varus has a gentle distal femoral and proximal tibial medial metaphyseal beaking and the apex of curvature is at the knee joint line. For infantile Blounts disease the apex of curvature is along the proximal tibia and metaphyseal beaking is more angulated with metaphyseal fragmentation. C: For infantile Blount disease the preferred treatment includes orthotics and/or valgus tibial osteotomy. D: The imaging findings are representative of infantile Blount disease. The imaging features include metaphyseal beaking with metaphyseal fragmentation and irregularity as well as tibia vara. Infantile Blounts disease often requires surgical intervention to correct the angular deformity. MRI may be useful to document physeal bridging which is located medially.