[RESULTS] At 6 to 8 h postanesthesia , ACB patients had significantly higher median dynamometer readings versus FNB patients ( median [ interquartile range ] , 6.1 kgf [ 3.5 , 10.9 ] ( ACB ) vs. 0 kgf [ 0.0 , 3.9 ] ( FNB ) ; P < 0.0001 ) , but was not inferior to FNB with regard to Numeric Rating Scale pain scores ( 1.0 [ 0.0 , 3.5 ] ACB vs. 0.0 [ 0.0 , 1.0 ] FNB ; P = 0.019 ) , or to opioid consumption ( 32.2 [ 22.4 , 47.5 ] ACB vs. 26.6 [ 19.6 , 49.0 ] ; P = 0.0115 ) .