Right knee pain Severe osteoarthritis affects the right knee with bone-on-bone apposition in the lateral tibiofemoral compartment and tricompartmental osteophytes. A genu valgum deformity is present. The cortex is not well seen along the lateral plateau of the proximal tibia and there is associated spiculated periosteal reaction. This would be an uncommon finding in osteoarthritis and we cannot exclude a malignant or infectious process in the absence of prior imaging. Correlation with previous outside imaging or further evaluation with MRI is recommended.
Severe osteoarthritis with valgus angulation of the right knee. Spiculated periosteal reaction along the lateral aspect of the proximal tibia not typical of osteoarthritis; recommend correlation with previous outside imaging or further evaluation with MRI.