The aim of this study is to determine the minimum effective volume of LA in 90 % of patients (MEV90) required for US-guided subgluteal sciatic nerve block.~Success rate is defined as a minimal composite score of 6 points (out of 8 points) at 30 minutes.
The aim of this study is to determine the minimum effective volume of LA in 90 % of patients (MEV90) required for US-guided subgluteal sciatic nerve block.