You are on a medical mission trip in Nigeria, and an 8-year-old male presents to your orthopedic clinic with a two-day history of worsening lower leg pain and a refusal to ambulate. Physical exam is notable for tenderness over the medial aspect of the distal tibia. He has mildly decreased ankle range of motion. Temperature is 101.4ºC, C-reactive protein is 30mg/dL, and white blood cell count is 15,000/mL. A serum Gram stain returns positive for rare Gram-negative bacilli. Initial radiographs are shown in Figure A. Which of the following micrographs is most consistent with the patient's likely underlying condition?