Direct anterior approach (DAA), total hip arthroplasty (THA, performed with the patient in the supine position, creates a unique opportunity to do bilateral THA under one anesthesia. Previous studies evaluating this option are limited by small sample size or lack of control group. The purpose of this study is to compare early clinical outcomes of simultaneous bilateral, unilateral and staged bilateral DAA-THA. Using an institutional registry database, we reviewed 3977 DAA-THA performed in 3334 patients at minimum 90-days follow up. A single surgeon performed all surgeries. Simultaneous bilateral DAA-THA group included 512 hips in 256 patients, unilateral DAA-THA group 2691 hips and staged bilateral DAA-THA group 774 hips in 387 patients. We reviewed 90-day postoperative complications, readmissions, length of stay, and rate of home discharge between all three groups.Background
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