Effect of pre-incisional infiltration with bupivacaine liposome for postoperative pain in patients undergoing acoustic neuroma surgery: study protocol for a prospective, double-blind, randomized controlled study

This randomized controlled trial aims to evaluate the superior effects of pre-incisional infiltration of liposomal bupivacaine on postoperative pain control in patients undergoing acoustic neuroma surgery. This may provide a more effective analgesic regimen for patients undergoing craniotomies.