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Females and Males Achieved Comparable Outcomes and Clinical Benefits Following Primary Hip Arthroscopy with Labral Repair, but Age Affected Outcomes and Conversion to Total Hip Arthroplasty. A Short and Mid-Term Follow-Up Analysis with Dual Stratification

Published:February 17, 2022DOI:https://doi.org/10.1016/j.arthro.2022.02.003

      Purpose

      To report and compare, according to sex and age, minimum 2-and minimum 5-year patient-reported outcome scores (PROs) and survivorship in a large cohort of patients who underwent primary hip arthroscopy for femoroacetabular impingement syndrome (FAIS).

      Methods

      Data from February 2008 to September 2018 were reviewed. Patients aged 60 and younger who underwent primary hip arthroscopy with minimum 2-year follow-up were included. Exclusion criteria were Tönnis grade >1, hip dysplasia, previous hip conditions, or any labral treatment different than repair. Minimum 5-year PROs were also collected. All patients included were divided into groups by sex. For further analysis, males and females were stratified according to age: < 21 years old, 21–30 years old, 31–40 years old, 41–50 years old, and 51–60 years old.

      Results

      In total, 1,326 hips had minimum 2-year follow-up, including 860 (64.9%) females and 466 males (35.1%), with a mean age of 31.6 years (range, 12.8-60.9 years) and a mean follow-up of 58.7 ± 28.9 months. Of those, 772 had minimum 5-year follow-up, 515 females (66.7%), and 257 males (33.3%) with a mean age of 31.7 years (range, 13.1-60.7 years) and a mean follow-up of 78.5 ± 23.0 months. All patients showed significant improvements in PROs at minimum 2-and 5-year follow-up (P < .001). Between sex analysis revealed comparable PROs at latest follow-up between females and males across any age group. Within sexes, and when sexes were combined, patients <21 years old had significantly better outcomes compared to other age groups. There were more females <21 years old that required revision arthroscopy than males <21 years old (P = .015). Conversion to total hip arthroplasty (THA) showed no significant difference between sexes (P > .05). Rates of THA were <21 years (.8%), 21-30 years (2.1%), 31-40 years (4%), 41-50 years (8.9%), and 51-60 years (14.3%).

      Conclusions

      Following primary hip arthroscopy for FAIS, all patients reported significant improvements in all PROs at minimum 2-and minimum 5-year follow-up, with females and males achieving similar success. Age affected outcomes, with patients under 21 years old reporting better scores regardless of sex. Although the conversion rate to THA was similar between the sexes, it was lower in the younger ages groups in both sexes.

      Level of Evidence

      III, retrospective comparative observation trial.
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