Background/Objectives: While hip arthroscopy outcomes for femoroacetabular impingement syndrome (FAIS) are well-documented, there is limited research comparing revision hip arthroscopy for FAIS to primary procedures. This study aimed to compare clinical outcome scores, revision hip arthroscopy, and conversion to total hip arthroplasty (THA) between patients undergoing revision hip arthroscopy for residual FAIS and those undergoing primary hip arthroscopy. Methods: This retrospective study matched 47 patients who underwent revision hip arthroscopy 1:2 by age, sex, body mass index, and smoking status to 94 patients who underwent primary surgery. Patient-reported outcomes (PROs) were assessed using the modified Harris Hip Score (mHHS) and Non-Arthritic Hip Score (NAHS) preoperatively and at 1-year follow-up. Long-term follow-up was performed to determine repeat surgical interventions at a minimum 5-year follow-up. Differences in postoperative outcomes were assessed using Mann–Whitney U tests and rate of subsequent surgery were compared using chi-squared analyses. Results: Both cohorts showed significant improvement in PROs at 1 year (p 0.05). Long-term follow-up revealed a significantly higher conversion rate to THA in the revision cohort compared to the primary group (p < 0.001). Conclusions: Patients undergoing revision hip arthroscopy start with lower baseline function but achieve similar improvements to those undergoing primary surgery. However, revision patients had a significantly higher rate of conversion to THA.
Berzolla et al. (Tue,) studied this question.