Background: Underweight patients undergoing total hip arthroplasty have been largely overlooked. The purpose of this study was to evaluate their complications profiles compared to normal weight individuals.
Methods: Patients were selected from the NSQIP database, matched, and arranged into 2 groups based on BMI. Complications were recorded and analyzed to determine differences in outcomes.
Results: Multivariate analysis demonstrated increased length of hospital stay (LOS) (p = 0.006) for underweight patients but failed to demonstrate higher rates of medical or surgical complications.
Conclusion: There are no increased rates of infectious or medical complications in underweight patients undergoing THA. However, increased LOS was demonstrated.
Keywords: BMI; Complications; Malnutrition; Total hip arthroplasty; Underweight.