• Andrew J Bryan, Aaron J Krych, Ayoosh Pareek, Patrick J Reardon, Rebecca Berardelli, and Bruce A Levy.
• Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA.
• Am J Sports Med. 2016 Oct 1; 44 (10): 2526-2530.

BackgroundHip arthroscopy for young patients with femoroacetabular impingement (FAI) has been successful, but the efficacy of hip arthroscopy in older patients is not clearly defined.PurposeTo evaluate the clinical outcomes of patients 55 years and older who are undergoing hip arthroscopy and to compare outcomes with those of patients younger than 55 years.Study DesignCohort study; Level of evidence, 3.MethodsA total of 201 (63 male, 138 female) patients undergoing primary hip arthroscopy for FAI without radiographic arthritis (Tönnis grade <3) were isolated from a prospective database and stratified by age to <55-year and ≥55-year groups. Patients were evaluated preoperatively and 1 and 2 years postoperatively using the modified Harris Hip Score (mHHS) and Hip Outcome Score (HOS: functional scores, as well as Activities of Daily Living [ADL] and Sport subscales). A Wilcoxon signed rank sum test was used to evaluate the differences in outcome scores between the cohorts at each interval.ResultsThe <55-year group included 174 patients (mean age, 37 ± 12 years), and the ≥55-year group included 27 patients (mean age, 61 ± 5 years). The minimum follow-up time was 2 years in each group. Preoperative Tönnis grades and mHHS scores (59 vs 59; P = .75) were similar between groups. The ≥55-year cohort underwent labral debridement more frequently (78% vs 36%; P =.02) and were more likely to have full-thickness cartilage defects (22% vs 4%; P = .04). Despite this, the mHHS in both groups improved significantly from baseline, without significant differences at 1 year (86 [≥55 years] vs 81 [<55 years]; P = .53) or 2 years (73.88 [≥55 years] vs 79.54 [<55 years]; P = .06). However, at a minimum 2-year follow-up, patients <55 years had significant improvements over patients ≥55 years in the HOS subscales for ADL score (85.6 vs 75.2; P = .03), ADL rating (80.1 vs 70.0; P = .004), Sport score (70.2 vs 55.6; P = .04), and Sport rating (70.2 vs 58.0; P = .04).ConclusionAlthough younger patients had superior HOS outcomes reported at 2 years compared with older patients after hip arthroscopy for FAI, both groups had significant improvement compared with their baseline. These data suggest that carefully selected patients 55 years and older without radiographic arthritis may benefit from hip arthroscopy.© 2016 The Author(s).

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