“…In addition, a single palmer injection may be inadequate to anesthetize the dorsal sensory branches that extend along the dorsum of the finger. 9 Eight randomized controlled trials have been published that compare various digital block techniques: 3 compared TDB with TTB; 10 -12 2 compared single subcutaneous palmar injection blocks at the A1 pulley with TTB; 13,14 1 compared TDB, TTB, and palmar subcutaneous block; 15 and 2 compared TDB with a single palmar subcutaneous injection. 16,17 One of these studies included a structured review 17 that concluded there is similar injection pain with subcutaneous and TDB and more pain with TTB.…”