After being informed about the study and potential risks, all patients giving written informed consent will be chosen for eligibility for the study entry. At the day before surgery date, patients who meet the eligibility criteria will be randomized in a double-blind manner (participant and investigator) in a 1:1 ratio to 75 mg of Pregabalin and 150 mg of Pregabalin groups.
The purpose of this study is to compare the efficacy of 75 mg of Pregabalin and 150 mg of Pregabalin in postoperative pain control after TKA.