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Purpose: To compare outcomes of hip arthroplasty in patients with and without a history of hip arthroscopy through a systematic review., Methods: A comprehensive search of the PubMed (MEDLINE) and Cochrane Central databases was performed using combinations of the keywords "hip," "arthroscopy," "arthroscopic," "arthroplasty," "replacement," and "conversion" in December 2017. Level I through III studies directly comparing outcomes of total or resurfacing hip arthroplasty between patients with and without a history of hip arthroscopy were included in this review if they reported at least 1 outcome measure., Results: Seven retrospective case-control studies collectively evaluating arthroplasty outcomes of 235 patients (104 male and 131 female patients) with a history of hip arthroscopy and 374 matched controls met the inclusion criteria. The mean age in the arthroscopy and control groups was 47.2 years and 49.1 years, respectively. The mean follow-up period after arthroplasty was 3.2 years in the hip arthroscopy group and 3.3 years in the control group. The mean time between arthroscopy and arthroplasty was 1.8 years. A posterior approach was used in 83.6% of arthroplasties. No statistically significant differences were noted in intraoperative measures, postoperative complications, or revision rates, with the exception of 1 study that reported an increased operative time among controls. Most studies reported similar subjective outcomes between groups, with a single study noting worse postoperative findings for the Harris Hip Score, Forgotten Joint Score-12, visual analog scale pain score, and patient satisfaction in the prior hip arthroscopy group., Conclusions: The current literature suggests that short-term and midterm outcomes of hip arthroplasty are comparable in patients with and without a history of hip arthroscopy. However, the available literature is limited given the small sample sizes and therefore greater potential for β error. Nevertheless, our findings may be useful for surgeons evaluating risks and prognoses in this patient population., Level of Evidence: Level III, systematic review of Level III studies., (Copyright © 2019 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Purpose: To compare preoperative, radiographic, and intraoperative findings between male and female patients undergoing hip arthroscopy., Methods: We performed a retrospective review of a multicenter registry of patients undergoing hip arthroscopy between January 2014 and January 2017. Perioperative data from patients who consented to undergo surgery and completed preoperative patient-reported outcome questionnaires were analyzed to determine the effect of sex on preoperative symptoms, patient-reported outcomes, radiographic measures, and surgical procedures., Results: A total of 1,437 patients (902 female and 535 male patients) with a mean age of 34 years were enrolled in the study. Female patients reported greater pain preoperatively on a visual analog scale (55.42 vs 50.40, P = .001) and deficits in functional abilities as per the modified Harris Hip Score (53.40 vs 57.83, P < .001) and International Hip Outcome Tool 12 (31.21 vs 38.51, P = .001) than male patients. There was a significant difference in the alpha angle (67.6° in male patients vs 59.5° in female patients, P < .001) corresponding with a higher prevalence of cam deformity in male patients (94.6% vs 84.5%, P < .001). Male patients had less range of motion in flexion (-5.67°, P < .001), internal rotation (-8.23°, P < .001), and external rotation (-4.52°, P < .001) than female patients. Acetabular chondroplasty was performed in 58% of male patients versus 40.2% of female patients (P < .001). Acetabuloplasty was performed in 59.1% of male patients versus 43.9% of female patients (P < .001)., Conclusions: Male and female patients undergoing hip arthroscopy differ statistically in terms of preoperative hip function, hip morphology, and self-reported functional deficits, as well as the prevalence of surgical procedures. However, they do not differ significantly in terms of symptom localization, duration, or onset. The observed differences in preoperative functional scores between sexes, although statistically significant, may not represent clinically meaningful differences., Level of Evidence: Level III, retrospective cross-sectional study., (Copyright © 2017 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)