F2q11 · MRCS A

F2q11

A 4-years old boy presents to the Emergency Department with a two-day history of fever, difficulty walking and is unable to weight bear on the right leg. He has been on oral Amoxycillin 250 mg three times a day for a chest infection over the last five days. He is irritable with a temperature of 39.4°C. He does not allow examination and keeps his right hip flexed and adducted. Blood tests are, (WBC) 18.3 (CRP) 146, haemoglobin 11.3 g/dL. What is the most likely diagnosis?

a. Acute avascular necrosis of hip

b. Dislocation of hip

c. Perthes disease

d. Septic arthritis.

e. Slipped upper femoral epiphysis.

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F2q11