Seizure Prompts Man to Fall

A 70-year-old man is brought to your facility by EMS following a new-onset, witnessed seizure. He reportedly fell down some steps. On arrival, he has returned to baseline but is complaining of left-sided weakness and right ankle pain. Medical history is significant for mild hypertension. Vital signs are stable. The patient exhibits slight confusion. He reports some mild weakness on his left side, especially in his lower extremity. There also appears to be moderate soft-tissue swelling of his right ankle, with a slight deformity noted. Dorsalis pedal pulse appears to be slightly diminished in that foot as well. You send the patient for noncontrast CT of the head, as well as a radiograph of the right ankle (the latter of which is shown). What is your impression?