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Patients \u226540 years old were propensity matched in a 1:1 ratio by sex and body mass index to patients &lt;40 years old. Patient\u2010reported outcomes (PROs) including Hip Outcome Score for Activities of Daily Living and Sports\u2010Specific subscales, modified Harris Hip, International Hip Outcome Tool\u201312, and Visual Analog Scale for Pain and Satisfaction were collected. Rates of minimal clinically important difference (MCID) and patient\u2010acceptable symptomatic state (PASS) achievement at 10 years were evaluated and compared between groups. Rates of secondary surgery including revision hip arthroscopy and conversion to THA were evaluated. Gross survivorship between cohorts was evaluated using a Kaplan\u2010Meier curve.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Fifty\u2010three patients aged \u226540 (age 48.3 \u00b1 5.8 years) were successfully matched to 53 patients aged &lt;40 (age: 28.9 \u00b1 7.2, &lt;0.001). There were no other preoperative group differences regarding patient demographics, characteristics, or radiographic findings. Both groups demonstrated significant improvement regarding all PROs at a minimum of 10 years\u2019 follow\u2010up (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001 for all). No significant difference was noted between cohorts regarding any delta (preoperative to 10\u2010year postoperative) scores (\n                      <jats:italic>P<\/jats:italic>\n                      &gt; .05 for all). High rates of MCID and PASS achievement were achieved in both cohorts, with no significant differences in any PRO measure (\n                      <jats:italic>P<\/jats:italic>\n                      &gt; .05 for all). No significant differences in rates of complications (age \u226540: 2.0%, age &lt;40: 7.7%,\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .363), rates of revision (age \u226540: 7.5%, age &lt;40: 9.4%,\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .999), or\u00a0conversion to THA (age \u226540: 13.2%, age &lt;40: 3.8%,\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .161) were identified. On Kaplan\u2010Meier analysis, no significant difference (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0=\u00a0.321) was demonstrated in overall gross survivorship between cohorts.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Patients with age\u00a0\u226540 with FAIS undergoing primary hip arthroscopy demonstrated durable and comparable 10\u2010year PRO and rates of MCID and PASS achievement compared with a propensity\u2010matched cohort of age &lt;40 counterparts.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III, retrospective comparative prognostic trial.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2024.01.004","type":"journal-article","created":{"date-parts":[[2024,1,6]],"date-time":"2024-01-06T11:33:41Z","timestamp":1704540821000},"page":"2413","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":16,"title":["Patients Aged 40 Years and Older Demonstrate Durable and Comparable Results to Patients Aged Less Than 40 Years After Primary Hip Arthroscopy for Femoroacetabular Impingement Syndrome: A Propensity Matched Study at Minimum 10\u2010Year Follow\u2010Up"],"prefix":"10.1002","volume":"40","author":[{"given":"Thomas W.","family":"Fenn","sequence":"first","affiliation":[{"name":"Section of Young Adult Hip Surgery Division of Sports Medicine Department of Orthopaedic Surgery Rush Medical College of Rush University Rush University Medical Center Chicago Illinois U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jimmy 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Surgeon Houston Methodist Houston Texas U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel J.","family":"Kaplan","sequence":"additional","affiliation":[{"name":"Section of Young Adult Hip Surgery Division of Sports Medicine Department of Orthopaedic Surgery Rush Medical College of Rush University Rush University Medical Center Chicago Illinois U.S.A."},{"name":"Division of Sports Medicine Department of Orthopaedic Surgery NYU Langone Orthopaedic Hospital New York New York U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shane J.","family":"Nho","sequence":"additional","affiliation":[{"name":"Section of Young Adult Hip Surgery Division of Sports Medicine Department of Orthopaedic Surgery Rush Medical College of Rush University Rush University Medical Center Chicago Illinois 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