Inclusion Criteria:  Age ≥ 18 and ≤ 90 years. Willing to participate in the study and competent to provide informed consent. Willing to comply with protocol procedures. Has an underlying diagnosis of osteoarthritis indicated for a total knee arthroplasty.  Exclusion Criteria:  The patient must not have taken any narcotic medications (schedule II) during the 3 months leading up to the surgery. The patient must not be allergic or intolerant to a medication used in the multimodal pain pathway. Revision knee arthroplasty. Uncontrolled diabetes with A1C > 8.0%.