Suzetrigine for Treatment and Reduction of Intense Discomfort After knEe Replacement PAIN

This is a prospective, randomized study. The purpose of this study is to evaluate if the addition of Suzetrigine, a new pain medication, to well established peri-operative pain regimen used for total knee replacement surgery will effect pain control. 1. Does Suzetrigine given pre-operatively decrease the total opioid consumed after total knee replacement surgery? 2. Dose Suzetrigine given pre-operatively decrease the visual analog pain scale pain scores after total knee replacement surgery? Study participants will be randomly assigned to receive either Suzetrigine medication or placebo medication.