AKT-0501

AKT-0501

A 7-year-old girl is playing outside when she trips and falls, landing on the outside of her left foot. She immediately cries out in pain and looks for help. There is no significant family or personal medical history. She is assisted by a neighbor as she limps inside. She is able to put weight on her foot.
Upon examination, her left ankle is swollen, warm, and shows signs of bruising. She has limited range of motion, particularly with internal rotation, and experiences tenderness along the lateral aspect of the ankle joint below the lateral malleolus, although there is no point tenderness over the malleolus itself.
What is the most probable diagnosis?