Fig. 5
a A 3-month-old girl with tenderness of the right leg and fever. Imaging shows soft tissue swelling around the tibia. The periostium of the proximal metaphysis is slightly irregular (arrow). b Ultrasound with Doppler shows infiltration of the subcutis, hyperaemia and a long subcutaneous fluid collection (arrow). c Subperiostal fluid collection/abscess (arrow shows uplifted periostium). Surgically the abscess was drained and the patient received antibiotics