Cocktail of Ropivacaine, Morphine, and Diprospan Reduces Pain and Prolongs Analgesic Effects after Total Knee Arthroplasty: A Prospective Randomized Controlled Trial

Figure 2

LIA technique diagram. The LIA was injected into the following layers: around the medial and lateral collateral ligament; the medial, lateral, and posterior capsules; the vastus medialis obliquus muscle and quadriceps tendon; and the prepatellar tissues and subcutaneous tissues. These site injections caused the following nerve endings that innervate the knee to be blocked. NVI, nerve to vastus intermedius; NVL, nerve to vastus lateralis; NVM, nerve to vastus medialis; LRN, lateral retinacular nerve from sciatic nerve; IPN, infrapatellar branch of saphenous nerve; RPN, recurrent peroneal nerve from common peroneal nerve.