Treatment of post-operative pain via sciatic nerve block with sustained-release liposomal anesthetic compositions

Provided herein are methods of administering to a peroneal and a tibial nerve of a patient, wherein the methods include: (a) selecting an entry point of an injection needle in a leg of a patient; (b) inserting the injection needle into the patient at the entry point; (c) administering to a sciatic nerve of the patient via the injection needle saline and a pharmaceutical composition; wherein the pharmaceutical composition comprises multivesicular liposomes comprising: at least one amphipathic lipid, at least one neutral lipid, and bupivacaine phosphate, wherein the bupivacaine phosphate is encapsulated within the multivesicular liposome.