A 2-year-old boy is brought to your ED not weight-bearing on his left leg for 5 days, progressively reluctant to walk. Otherwise well, immunisations UTD. Vitals: T 38.5°C, HR 150, RR 30, Sats 99% RA.

Toddler limp

1. List (5) potential causes for this boy’s signs and symptoms. 5 marks

X-ray of the L ankle is performed.

2. List (3) relevant findings and state a conclusion. 4 marks

3. List (3) further investigations you would order and provide rationale for each. 3 marks