Study of the QUadratus Lumborum Bloc in Total Hip ARthroplasty: Efficacy and Safety

Overview

The purpose of this prospective research study is to determine the best way to manage post-operative pain after a total hip arthroplasty. Currently, there is no standard of care for managing post-operative pain in these patients. The quadratus lumborum block (QLB) first described by Blanco in 2007, is a promising technique in this indication: recently, there is a growing evidence for the use of the QLB as an alternative technique for pain management after hip surgery.

A sample size of 100 patients (50 per group) was calculated based on 20% reduction in morphine consumption with 0.05% significance and a power of 0.8. After ethical committee approval, eligible patients scheduled to have a fast-track total hip arthroplasty are screened during preoperative evaluation clinic. Informed written consent will be obtained from all patients during pre-anesthesia visit the day before surgery (J-1). Consenting patients will be randomized the day of surgery (J0) to undergo QLB with ropivacaine ("ropivacaine group") or normal saline ("saline group"). Before general anesthesia, all patients will have a needle-insertion posterior to the quadratus lumborum muscle avec injection of either ropivacaine in the "ropivacaine group" or normal saline in the "saline group". After general anesthesia induction, dexamethasone and ketamine will be given to all patients.

Conditions

Interventions

Eligibility

Locations (1)

Outcomes