Prior Femoroacetabular Osteoplasty Does Not Compromise the Clinical Outcome of Subsequent Total Hip Arthroplasty

BackgroundTotal hip arthroplasty (THA) is the most effective treatment option for patients with symptomatic osteoarthritis after a prior femoroacetabular osteoplasty (FAO). This study evaluated clinical outcomes of THA after a prior FAO and compared the results with a matched group of patients who underwent THA with no prior surgical procedures in the affected hip.MethodsBy reviewing our prospectively maintained database, we identified 74 hips (69 patients) that underwent THA after previous FAO between 2004 and 2017. They were matched 1:3 to a control group of primary THA with no history of any procedures on the same hip based on age, sex, body mass index, date of surgery, Charlson comorbidity index, surgical approach, and acetabular and femoral component type. At minimum 2-year follow-up, modified Harris Hip Score, 90-day readmission, and revision THA for any reason were compared between the groups.ResultsThe median time interval between FAO and subsequent THA was 1.64 years. There was no significant difference in preoperative Harris Hip Score between patients in the case and control cohorts. At the latest follow-up, the median modified Harris Hip Score was 77.6 in the case group and 96.2 in the control, and the difference was not statistically significant. None of the patients in the case group developed infection. 7 patients in the case group required additional procedures at any point, compared with 15 in the control.ConclusionTHA after prior FAO has similar outcomes to primary THA in patients with no prior procedures in the affected hip. THA can be performed safely with excellent outcome in patients with a history of FAO.