case_images: PMC7077040_01
case_images: Left knee anteroposterior (AP) and lateral plain films demonstrating joint space narrowing with erosive features.
case_images: CRIOR2020-1392182.001.jpg
case_images: PMC7077040_01_CRIOR2020-1392182.001.jpg
case_images: fig1
case_images: Plain films of the left knee demonstrated joint space narrowing with erosive features on both sides of the joint (Figure 1).
case_images: Left knee coronal and sagittal computed tomography (CT) images demonstrating bony destruction of the distal femur and proximal tibia.
case_images: CRIOR2020-1392182.002.jpg
case_images: PMC7077040_01_CRIOR2020-1392182.002.jpg
case_images: fig2
case_images: Computed tomography (CT) scan of his left knee demonstrated bony destruction of both the distal femur and proximal tibia without evidence of malignancy (Figure 2).