“…1,[7][8][9]16 Some authors have advocated SNBP, a procedure in which the brachial plexus is dissected free of constricting bands and muscle, 20,21,24,28,32,34,38 whereas others have advocated TFRR. 6,15,22,25,35,44 The main goal of the present study was to determine which of these operations is more effective, considering both risk and symptomatic relief.…”