Carpal tunnel release under intravenous regional or local infiltration anaesthesia.

Fifteen patients with bilateral carpal tunnel syndrome underwent surgery using intravenous regional anaesthesia (IVRA) on one hand and local infiltration anaesthesia (LA) on the other. All 30 carpal tunnel releases were performed without complication. Patient tolerance for IVRA and LA was similar. Six patients preferred the LA, eight preferred IVRA and one had no preference. Tourniquet time averaged 16 minutes when LA was used and 24 minutes with IVRA (P<0.05). Use of local anaesthesia allows more expeditious surgery and limits costs, but intravenous regional anaesthesia is recommended if epineurotomy, internal neurolysis or flexor tenosynovectomy are planned.