Double-blind, Prospective, Randomized
Conditions
Keywords
Pericapsular Nerve Group Block, hip endoprostheses
Brief summary
The aim of this study is to investigate the analgesic efficacy of the pericapsular nerve group (PENG) block during the implantation of hip endoprostheses. The study is designed as a prospective randomized double-blind study and the study participants were randomized into 2 arms and either 20 ml ropivacaine 0.5% (verum group) or 20 ml physiological saline solution (placebo group) will be applied.
Interventions
PENG block with ropivacaine
Placebo control
Sponsors
Study design
Eligibility
Inclusion criteria
* planned cementless hip TEP operation for primary coxarthrosis via minimally invasive anterolateral approach using the identical implant system (Taperloc stem, Plamafit cup) * Patient capable of giving consent * Informed consent has been obtained * age \> 18 years
Exclusion criteria
* Refusal to participate in the study * Regular use of opioids * Known chronic pain symptoms * Infections in the area of the puncture site * Presence of a contraindication to ropivacaine * Presence of a contraindication to metamizole * Presence of a contraindication to postoperative analgesia with diclofenac * Secondary forms of osteoarthritis with deformities (i.e. high-grade dysplasia, secondary conditions after trauma, secondary conditions after childtrauma, secondary conditions after childhood hip joint diseases * Spinopelvic dysbalance, spinal canal stenosis * Previous operations on the hip/pelvis
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Rate of postoperative opioid administration | 60 minutes after arrival in the recovery room | The primary objective is to investigate the influence of the PENG block on the need for postoperative ntravenously opioid administration within the first hour in the recovery room. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Quantity of total opioid consumption | until the evening of the second postoperative day | Assessment of total opioid consumption until second postoperative day in both arms |
| Intensity of postoperative pain | until the evening of the second postoperative day | Subjective perception of postoperative pain, using the numeric rating scale. |
| Intensity of postoperative nausea and vomiting | until the evening of the second postoperative day | Assessment of postoperative nausea/vomiting using the PONV Score |
| Postoperative recovery | until the evening of the second postoperative day | Assessment of postoperative recovery using the QoR15 score |
Countries
Germany