Outcomes of Total Hip Arthroplasty With and Without a History of Hip Arthroscopy.

Studies have shown increased risk for dislocation, loosening, and revision in patients undergoing total hip arthroplasty (THA) after hip arthroscopy (HA). The authors examined differences in presentation and outcomes between patients who underwent THA with and without prior HA from 2016 to 2021. Twenty-one HA to THA patients were matched on age, sex, race, body mass index (BMI), American Society of Anesthesiology (ASA) score, and comorbidities to 100 THA controls. Univariate analysis was used to determine differences between groups. HA patients were more likely to have Kellgren-Lawrence (KL) grades of 2 or 3, whereas those with no HA were more likely to present with 3 or 4. HA to THA patients had 1.2 mm more joint space than THA patients. Time to THA from first orthopaedic visit was 16 months longer for patients with HA. Postoperatively, there were no significant differences. This suggests THA can be an effective intervention for failed HA. (Journal of Surgical Orthopaedic Advances 33(3):168-170, 2024).