Figure 1 Hypo-echogenic collection was visualized adjacent to the sciatic nerve.
Figure 2 Evacuation of the collection with a 18-gauge Tuohy needle (B. Braun, Germany) under high-frequency (6-13MHz) linear array ultrasound transducer (SonoSite S-Nerve, Bothell, WA, USA).
Figure 3The syringes used to wash the collection. The collected pus is in the left one and the last rinse is in the right one.