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Exclusion criteria included prior hip surgery, hip osteoarthritis, simultaneous revision hip arthroscopy, and other concomitant hip conditions. Preoperative and minimum 5\u2010year patient\u2010reported outcomes were collected including Visual Analog Scale, modified Harris Hip Score, Non\u2010Arthritic Hip Scope, International Hip Outcome Tool\u201012, Hip Outcome Score\u2010Activity of Daily Living Scale, Hip Outcome Score\u2010Sport\u2010Specific Subscale, and University of California at Los Angeles score. Patient satisfaction, complications, and revision rate were documented. Rates of achieving the minimal clinically important difference and patient acceptable symptom state were determined. Correlation and subgroup analyses were performed to determine the effect of the time interval between bilateral procedures being more or less than 12\u2009months.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 59 patients (118 hips) were included in the study, with a minimum follow\u2010up time of 5\u2009years. All patient\u2010reported outcomes showed significant improvements at the final follow\u2010up (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u2009.001). Eight patients (13.6%) underwent revision hip arthroscopy. Comparable clinical outcomes and rates of achieving minimal clinically important difference (&gt;70%) and patient acceptable symptom state (&gt;60%) were found between patients who underwent bilateral procedures less or more than 12\u2009months apart, with a similar follow\u2010up duration of over 5\u2009years (not significant).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Staged bilateral hip arthroscopy for bilateral femoroacetabular impingement syndrome yields favorable clinical outcomes with symptom relief and hip functional improvement at a minimum follow\u2010up time of 5\u2009years. A time interval of &lt;12\u2009months or &gt;12\u2009months between bilateral procedures did not affect clinical outcomes and revision rate.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III, retrospective cohort study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/arj.70069","type":"journal-article","created":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T13:00:17Z","timestamp":1774011617000},"page":"612-623","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Midterm Outcomes of Staged Bilateral Hip Arthroscopy for Femoroacetabular Impingement Syndrome Show Comparable Outcomes Between Time Interval More or Less Than 12\u2009Months of Bilateral Procedures"],"prefix":"10.1002","volume":"42","author":[{"given":"Zhuohan","family":"Cao","sequence":"first","affiliation":[{"name":"Department of Sports Medicine Institute of Sports Medicine of Peking University Peking University Third Hospital  Beijing China"},{"name":"Beijing Key Laboratory of Sports Injuries  Beijing China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices Ministry of Education  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanying","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine Institute of Sports Medicine of Peking University Peking University Third Hospital  Beijing China"},{"name":"Beijing Key Laboratory of Sports Injuries  Beijing China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices Ministry of Education  Beijing 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