One of the newest modalities introduced on the market is liposomal bupivacaine (Exparel). Liposomal bupivacaine is a lipid encapsulated bupivacaine that allows for depo administration of the medication into the soft tissue during a surgical procedure. The lipids are engineered to slowly release over an approximately 72 hour time period, resulting in the slow release of free bupivacaine in to the soft tissue of the surgical site. This has the proposed advantage of a longer duration of analgesia compared to standard bupivacaine injections.