Increasing Age Is Not Independently Associated with Increased 30-Day Morbidity after Hip Arthroscopy

Abstract

The purpose of this study is to examine the 30-day postoperative complications after hip arthroscopy as a function of patient age. The American College of Surgeons National Surgical Quality Improvement Program database from 2005 to 2016 was used to identify all patients undergoing hip arthroscopy using Current Procedural Terminology and International Classification of Disease codes. Patient characteristics and postoperative complications were compared in a retrospective cohort study with a level of evidence 3 across patient age cohorts using bivariate and multivariate analysis that corrected for differences in baseline patient characteristics. In total, 2,427 patients undergoing hip arthroscopy were identified. Of all identified patients, 667 (27.5%) were under 30 years of age, 596 (24.5%) were between 31 and 40, 599 (24.6%) were between 41 and 50, and 566 (23.3%) were older than 50. Chondroplasty, abrasion arthroplasty, and/or resection of the labrum were the most commonly performed procedures in all age groups. As age increased, patients were more likely to be female and have a higher body mass index, more medical comorbidities, a shorter operative duration, and a higher American Society of Anesthesiologists class. The rate of any 30-day postoperative complication was 1.35% in patients under 30 years of age, 1.68% in patients between 31 and 40, 2.67% in patients between 41 and 50, and 5.12% in patients older than 50 (p < 0.001). Older patients also had a higher rate of deep surgical site infections and blood transfusions (p ≤ 0.001). However, no differences were identified with multivariate analysis. While older patients had higher short-term complications following hip arthroscopy, age alone was not an independent predictor of adverse outcomes. Further investigation is necessary to determine the risk factors associated with significant postoperative morbidity in older patients undergoing hip arthroscopy.