Comparison of Ultrasound Guided Genicular Nerve Block and Periarticular Infiltration in Knee Arthroplasty

"The cocktail will be injected at the following 7 anatomical zones as follows:~Zone 1: medial retinaculum Zone 2: medial collateral ligament and medial meniscus capsular attachment Zone 3: posterior capsule Zone 4: lateral collateral ligament and lateral meniscus capsular attachment Zone 5: lateral retinaculum Zone 6: patellar tendon and fat pad Zone 7: cut ends of quadriceps muscle and tendon Injection at zones 2, 3, and 4 will be administered after making the tibial and femoral cuts and ligament balancing. At zones 1, 5, 6, and 7, the injection will be administered after implant placement."

The genicular arteries will be identified near the periosteal areas, which are the junctions of the epicondyle and the shafts of the femur and tibia, and confirmed by color Doppler ultrasound. genicular nerve block target points should be next to each genicular artery because the superior lateral, superior medial, and inferior medial genicular artery traveled along each genicular nerve.After using color Doppler to confirm the genicular artery, the needle will be inserted in the plane of the ultrasound probe in the long-axis view.