Paper 23: Long Term Outcomes After Arthroscopic Treatment of Femoroacetabular Impingement for Patients with Borderline Dysplasia

• Published in: Orthopaedic journal of sports medicine 2022-05, Vol.10 (5_suppl3)
• Main Authors: Day, Molly, Olsen, Reena, Buza, Stephanie, Kelly, Bryan, Ranawat, Anil, Nawabi, Danyal, Selley, Ryan
• Format: Article
• Language: English
• Subjects: Activities of daily living; Orthopedics; Patients; Sports medicine
• ISSN: 2325-9671; 2325-9671
• DOI: 10.1177/2325967121S00561

Objectives: Outcomes following isolated hip arthroscopy for patients with dysplasia have been unfavorable, results have included iatrogenic instability and conversion to total hip arthroplasty (THA) at a young age. However, patients with borderline dysplasia have portended more favorable results at short and medium term follow-up. The purpose of this study was to assess long term outcomes after hip arthroscopy for femoroacetabular impingement (FAI) in borderline dysplasia (BD) patients (LCEA, 18°-25°) compared to a control cohort of nondysplastic patients (LCEA, 25°-40°). Methods: Between March 2009 and July 2012, a BD group of 33 patients (38 hips) was identified. An age- and sex-matched control group of 83 patients (96 hips) was also identified. Patient-reported outcome scores, including the modified Harris Hip Score (mHHS), the Hip Outcome Score–Activities of Daily Living (HOS-ADL) and Sport-Specific Subscale (HOS-SSS), and the International Hip Outcome Tool (iHOT-33), were collected preoperatively and subsequently at an average of 9.6 years post-operatively. Results: The mean LCEA and Tönnis angle was 22.4° ± 2.02° and 6.2° ± 3.23° in the BD group and 31.7° ± 3.52° and 2.42° ± 3.02° in the control group, respectively (P