{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T23:01:37Z","timestamp":1777676497195,"version":"3.51.4"},"reference-count":35,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2017,1,31]],"date-time":"2017-01-31T00:00:00Z","timestamp":1485820800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["HIP International"],"published-print":{"date-parts":[[2017,5]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Osteonecrosis of the hip is a clinical, radiographic, and pathologic entity that commonly affects young patients. This study evaluates long-term implant survival and patient-reported outcomes after primary total hip arthroplasty (THA) in patients with osteonecrosis aged 35 or younger.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A retrospective study with prospective follow-up was conducted at a major academic medical center. Chart review was performed to identify young THA patients with osteonecrosis, and follow-up surveys were conducted to determine implant survival and patient-reported outcomes. Kaplan-Meier survival analysis was performed to evaluate implant survival, and the hip disability and osteoarthritis outcome score (HOOS) was used to describe patient-reported outcomes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The study included 135 patients (204 THAs) with a mean time to follow-up of 14 years. In this group, 10-year implant survival was 86% and 20-year implant survival was 66%. Implant survival was longer in male patients (p = 0.02) and patients that were over the age of 25 at the time of surgery (p = 0.03). The mean HOOS scores at follow-up were 87 for pain, symptoms, and ADLs, and 77 for sports. All HOOS measures were lower in patients that underwent a revision THA, and HOOS-Pain and HOOS-Sport scores were lower in patients that were over the age of 25 at the time of surgery (p&lt;0.05).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Young patients with osteonecrosis have good implant survival and long-term outcomes after THA. Patient factors and implant characteristics should be considered when predicting implant survival and outcomes after THA in young patients with osteonecrosis.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.5301\/hipint.5000457","type":"journal-article","created":{"date-parts":[[2017,2,17]],"date-time":"2017-02-17T05:38:53Z","timestamp":1487309933000},"page":"286-292","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":39,"title":["Outcomes after Total Hip Arthroplasty in Young Patients with Osteonecrosis of the Hip"],"prefix":"10.1177","volume":"27","author":[{"given":"Ishaan","family":"Swarup","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Hospital for Special Surgery, New York - USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marisa","family":"Shields","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Hospital for Special Surgery, New York - USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erik N.","family":"Mayer","sequence":"additional","affiliation":[{"name":"David Geffen School of Medicine at UCLA, Los Angeles - USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chelsea J.","family":"Hendow","sequence":"additional","affiliation":[{"name":"New York Medical College, Valhalla - USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jayme C.","family":"Burket","sequence":"additional","affiliation":[{"name":"Healthcare Research Institute, Hospital for Special Surgery, New York - USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark P.","family":"Figgie","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Hospital for Special Surgery, New York - 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