{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T10:14:51Z","timestamp":1793182491546,"version":"4.5.0"},"reference-count":30,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2017,6,13]],"date-time":"2017-06-13T00:00:00Z","timestamp":1497312000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2017,8]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Studies on midterm outcomes of the arthroscopic treatment of femoroacetabular impingement (FAI) and labral tears with mild osteoarthritis (OA) are limited.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To evaluate outcomes of the arthroscopic treatment of FAI and labral tears in patients with mild preoperative OA (T\u00f6nnis grade 1) at a minimum 5-year follow-up, and to perform a matched-pair comparison to a control group with T\u00f6nnis grade 0.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cohort study; Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>\n                      Data were prospectively collected on patients who underwent hip arthroscopic surgery between February 2008 and April 2011. Inclusion criteria were arthroscopic treatment for FAI and labral tears and having preoperative patient-reported outcome (PRO) scores, including the modified Harris Hip Score (mHHS), Non-Arthritic Hip Score (NAHS), and Hip Outcome Score\u2013Sports-Specific Subscale (HOS-SSS), and visual analog scale (VAS) scores for pain. Exclusion criteria were workers\u2019 compensation claims, preoperative T\u00f6nnis grade \u22652, and previous hip conditions (ipsilateral surgery, slipped capital femoral epiphysis, avascular necrosis, and dysplasia). Patients with minimum 5-year outcomes were eligible for matching on a 1:1 ratio (T\u00f6nnis grade 0 vs 1) based on age \u00b15 years, body mass index \u00b15 kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      , sex, labral treatment, and capsular treatment.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Of 356 eligible hips, 292 hips had minimum 5-year outcomes (82%). Eighty-five hips with T\u00f6nnis grade 1 were evaluated. At 5-year follow-up, patients with T\u00f6nnis grade 1 had significant improvements in all PRO and VAS scores ( P &lt; .0001). The overall satisfaction score was 8.2. The survivorship rate with respect to conversion to total hip arthroplasty for the T\u00f6nnis grade 1 group was 69.4% at 5 years, while in the T\u00f6nnis grade 0 group, it was 88.4% ( P = .0002). Sixty-two hips with T\u00f6nnis grade 0 were matched to 62 hips with T\u00f6nnis grade 1. Both groups demonstrated improvements in all PRO and VAS scores from preoperatively to postoperatively ( P &lt; .0001). No significant differences existed between preoperative or postoperative scores or survivorship between the groups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The arthroscopic treatment of FAI and labral tears in patients with T\u00f6nnis grade 1 had good results at 5-year follow-up. After controlling for other variables using a matched-pair comparison, patients with T\u00f6nnis grade 1 had similar, durable improvements to those with T\u00f6nnis grade 0. While strict surgical indications and appropriate expectations are recommended for patients with mild OA, T\u00f6nnis grade 1 alone should not be considered a contraindication to hip arthroscopic surgery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0363546517706957","type":"journal-article","created":{"date-parts":[[2017,6,13]],"date-time":"2017-06-13T17:57:17Z","timestamp":1497376637000},"page":"2294-2302","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":113,"title":["Outcomes of Hip Arthroscopic Surgery in Patients With T\u00f6nnis Grade 1 Osteoarthritis at a Minimum 5-Year Follow-up: A Matched-Pair Comparison With a T\u00f6nnis Grade 0 Control Group"],"prefix":"10.1177","volume":"45","author":[{"given":"Benjamin G.","family":"Domb","sequence":"first","affiliation":[{"name":"American Hip Institute, Westmont, Illinois, USA"},{"name":"Hinsdale Orthopaedics, Hinsdale, Illinois, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edwin O.","family":"Chaharbakhshi","sequence":"additional","affiliation":[{"name":"American Hip Institute, Westmont, Illinois, USA"},{"name":"Loyola University Chicago Stritch School of Medicine, Maywood, Illinois, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danil","family":"Rybalko","sequence":"additional","affiliation":[{"name":"University of Illinois at Chicago, Chicago, Illinois, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary R.","family":"Close","sequence":"additional","affiliation":[{"name":"American Hip Institute, Westmont, Illinois, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jody","family":"Litrenta","sequence":"additional","affiliation":[{"name":"American Hip Institute, Westmont, Illinois, 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