Comparison of Two Regional Technics In Knee Artroplasty

Purpose: This prospective, randomised, controlled, single-blind, multicentre study was designed to investigate the effects of peripheral nerve block methods (applied using unilateral spinal anaesthesia \[USA\] on elderly patients scheduled to undergo total knee arthroplasty) on perioperative haemodynamic parameters and the postoperative analgesia period. Materials and Methods: Sixty patients in the American Society of Anesthesiologists (ASA) Physical Status II-III group were randomly divided into two groups. Spinal anaesthesia was performed in the USA group, in the lateral position through the intervertebral space, with 2 ml of hyperbaric bupivacaine (L4-L5 or L3-L4); 0.5% bupivacaine hydrochloride and 2% lidocaine were combined for the psoas compartment-sciatic (PCS) group, and the mixture was used for psoas compartment block (PCB) and sciatic nerve block. The haemodynamic parameters were recorded every 5 minutes until the end of the preoperative and perioperative operation periods and postoperative first analgesic application time.