We review the results of 312 cases of sciatic nerve blockade in the poplitea fossa for surgery of the dorsal foot. An atraumatic, insulated needle connected to a neurostimulator was used to make a single puncture using a posterior approach. The anesthetic was 1% mepivacaine (4-5 mg/kg-1). Mean latency was 12.4 min. Efficacy was very high (86% excellent, 10% adequate, 4% failed). Time of analgesia was 6 h 15 min (range 3-16 h). No complications or sequelae were recorded. We conclude that the technique is highly effective and comfortable for patients, as it requires only one puncture and gives good postoperative analgesia with no major side effects.