Efficacy of iPACK After Unilateral TKA

"Interspace between the popliteal artery and the capsule of the posterior knee (iPACK):~This is basically ultrasound guided peripheral nerve block performed by the anesthesiologists at the posterior side of the knee to control pain after TKA."

A mixture of Bupivacaine 0.25% 20 ml + epinephrine 100 mics ± lornoxicam 8 mg ± morphine 10 mg ± tranexamic acid 1 gm in 40 ml normal saline (NS) will be injected into the posterior capsule and the medial and lateral ligaments just before implantation: after insertion of the implants and into the capsule and retinacular tissues. The remaining solution (approximately 20 mL) will be used to infiltrate the muscle and subcutaneous tissues. This intervention is commonly performed by the operating orthopedic surgeon to control pain after TKA.