US Patent 11918688 Treatment of hip pain with sustained-release liposomal anesthetic compositions

In some embodiments provided herein is a method of treating hip pain in a subject, the method comprising administering into the subject a pharmaceutical composition comprising: a) a multivesicular liposome comprising: at least one amphipathic lipid, and at least one neutral lipid; and b) an aqueous phase comprising bupivacaine phosphate, wherein the aqueous phase is encapsulated within the multivesicular liposome.