{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T18:03:36Z","timestamp":1780596216227,"version":"3.54.1"},"reference-count":29,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["arthroscopyjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To compare 10\u2010year outcomes of hip arthroscopy in patients with T\u00f6nnis grade 1 versus grade 0 osteoarthritis, with specific focus on patient\u2010reported outcomes, rates of minimal clinically important difference, Patient Acceptable Symptom State, Substantial Clinical Benefit, and arthroscopic revision and total hip arthroplasty (THA) conversion rates.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients undergoing hip arthroscopy for femoroacetabular impingement syndrome (FAIS) were prospectively enrolled. A 1:1 propensity score match based on age, sex, body mass index, smoking status, labral treatment, capsular management, lateral center edge angle, and preoperative alpha angle matched T\u00f6nnis grade 1 patients to T\u00f6nnis grade 0 patients. Inclusion criteria were symptomatic FAIS with radiographic deformity, failure of nonoperative treatment, and \u226510\u2010year follow\u2010up. Patients were excluded for prior ipsilateral hip arthroscopy, T\u00f6nnis grade &gt;1, incomplete data, dysplasia (lateral center edge angle &lt;\u200918\u00b0), developmental hip disorders, or concomitant procedures. Modified Harris hip score (mHHS), Non\u2010Arthritic Hip Score (NAHS), minimal clinically important difference, Patient Acceptable Symptom State, Substantial Clinical Benefit, and failure (revision arthroscopy or THA conversion) rates at 10\u2009years were assessed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Out of a total database of 152 patients, the study matched 32 T\u00f6nnis grade 1 patients (mean age 40.79\u2009\u00b1\u200910.1\u2009years; body mass index 25.13\u2009\u00b1\u20093.73; follow\u2010up 12.16\u2009\u00b1\u2009.96\u2009years [range, 10.08\u201013.59]) to 32 T\u00f6nnis grade 0 patients (mean age 41.82\u2009\u00b1\u200911.66; body mass index 25.63\u2009\u00b1\u20093.53; follow\u2010up 11.42\u2009\u00b1\u20091.23\u2009years [range: 10.02\u201013.58]) for a total of 64 included patients within this study. Baseline characteristics were well matched with the only significantly different variable being follow\u2010up time (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.009), though all patients reached a minimum follow\u2010up of 10\u2010years. Both cohorts showed significant improvements in mHHS and NAHS at 10\u2009years (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u2009.0001), with no significant differences between groups at 10\u2010years (mHHS\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.509; NAHS\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.339) or any other time point. MCID achievement rates were high for both mHHS (T\u00f6nnis 0: 87.5%; T\u00f6nnis 1: 90.6%;\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.689) and NAHS (T\u00f6nnis 0: 87.5%; T\u00f6nnis 1: 93.8%;\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.391). T\u00f6nnis grade 1 patients showed higher failure (THA\/revision) rates compared to T\u00f6nnis grade 0 patients (31.25% vs 3.13%;\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.006). Analyzed separately, T\u00f6nnis grade 1 patients had 5 cases (15.63%) of THA conversion compared to 0 cases in the T\u00f6nnis grade 0 cohort (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.05), while revision rates were similarly elevated in the T\u00f6nnis grade 1 group (5\/32; 15.63%) compared to T\u00f6nnis grade 0 patients (1\/32; 3.13%) (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u2009.196).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Hip arthroscopy yields significant long\u2010term improvements for FAIS patients with T\u00f6nnis grade 1 and 0 osteoarthritis. However, increased failure rates in T\u00f6nnis grade 1 patients suggests that preoperative osteoarthritis may predispose patients to greater rates of subsequent THA conversion or revision.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III, retrospective comparative matched case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/arj.70076","type":"journal-article","created":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T11:19:50Z","timestamp":1773227990000},"page":"888-899","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["T\u00f6nnis Grade 1 Is Associated With Higher Total Hip Arthroplasty Conversion Than T\u00f6nnis Grade 0 at 10\u2010Year Follow\u2010Up After Hip Arthroscopy for Femoroacetabular Impingement Syndrome: A Propensity\u2010Matched Cohort Analysis"],"prefix":"10.1002","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-1072-1774","authenticated-orcid":false,"given":"Griffith G.","family":"Gosnell","sequence":"first","affiliation":[{"name":"NYU Langone Orthopedic Sports Medicine  New York NY U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-4631-4737","authenticated-orcid":false,"given":"Emily","family":"Berzolla","sequence":"additional","affiliation":[{"name":"NYU Langone Orthopedic Sports Medicine  New York NY U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9802-290X","authenticated-orcid":false,"given":"Bradley A.","family":"Lezak","sequence":"additional","affiliation":[{"name":"NYU Langone Orthopedic Sports Medicine  New York NY U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2502-9294","authenticated-orcid":false,"given":"Nathaniel 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U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0417-3593","authenticated-orcid":false,"given":"Thomas","family":"Youm","sequence":"additional","affiliation":[{"name":"NYU Langone Orthopedic Sports Medicine  New York NY 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