Pain After Total Knee Arthroplasty Clinical Trial
Official title:
Effect of Adductor-Canal-Blockade on High Pain Responders the 1. or 2. Postoperative Day After Total Knee Arthroplasty
The purpose of this study is to determine whether Adductor-Canal-Blockade (ACB) is superior to placebo when it comes to analgetic efficacy in high pain responders after Total Knee Arthroplasty (TKA). High pain responders are defined as patients reporting VAS > 60 during knee flexion the 1. or 2. day after surgery.
The patients will be included the 1. or 2. day after surgery. All TKA patients will be
screened. Those reporting VAS > 60 during active 45 degrees knee flexion will be asked to
participate.
Included patients will receive 2xACB (singleshot) first placebo (30ml saline) and then
ropivacaine (30ml ropivacaine 7,5mg/ml) or the other way around (randomized). There will be
45 minutes between the two blockades. The blockades will be ultrasound guided.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment