Woman with acute onset involuntary limb movements.

CLINICAL INTRODUCTION: An 88-year-old woman presented with acute onset of involuntary limb movements for one day. Two days prior she had fallen a suffered a left hip contusion but no head trauma. There was no fever or difficulty breathing. Her heart rate was 72 bpm with blood pressure of 109/68 mm Hg. Physical examination revealed restricted left hip motion due to pain and a sustained twisted posture of the upper extremity without paresis. Glasgow Coma Scale was 15, and there was no evidence of Kernig's or Brudzinski's sign. She underwent a hip X-ray and non-contrast CT scan (figures 1 and 2).emermed;36/7/415/F1F1F1Figure 1Anteroposterior X-radiograph of the hip.emermed;36/7/415/F2F2F2Figure 2A non-contrast brain CT.

QUESTION: What is the most likely cause of the clinical presentation?Acute meningitisCerebral fat embolismHaemorrhagic strokeHypertensive encephalopathy For answer see page 2 For question see page 1.