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Complications were based on the Centers for Medicare & Medicaid Services 2013 THA<\/jats:styled-content> Complication Measure, which included myocardial infarction, pneumonia, or sepsis within 7 days; surgical site bleeding, pulmonary embolus, or venous thrombosis within 30 days; or mechanical complications or local infection within 90 days. Mortality within 90 days, revision arthroplasty within 1 year, long length of stay, discharge to a care facility, and readmission within 90 days were also examined.<\/jats:p><\/jats:sec>Results<\/jats:title>The study included 2,773 patients with AS<\/jats:styled-content> and 107,341 patients without AS<\/jats:styled-content> who had THA<\/jats:styled-content>. Perioperative complications, 30\u2010day complications, and local infections were rare in both groups (<1%). Mechanical complications and revision arthroplasty were uncommon in both groups. Ninety\u2010day mortality was lower among patients with AS<\/jats:styled-content> than those without AS<\/jats:styled-content> (0.36% versus 0.7%). Patients with AS<\/jats:styled-content> were more likely to be discharged to a care facility, and slightly more likely to have a long length of stay. Likelihood of a long stay was lower at hospitals that performed \u2265100 THA<\/jats:styled-content>s per year, but other complications were not associated with hospital volume.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>Complications after primary THA<\/jats:styled-content> are uncommon in patients with AS<\/jats:styled-content> and similar in frequency to those without AS<\/jats:styled-content>. Ninety\u2010day mortality was lower among patients with AS<\/jats:styled-content>.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acr.23582","type":"journal-article","created":{"date-parts":[[2018,4,18]],"date-time":"2018-04-18T16:59:39Z","timestamp":1524070779000},"page":"1101-1108","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Complications of Total Hip Arthroplasty in Patients With Ankylosing Spondylitis"],"prefix":"10.1002","volume":"71","author":[{"given":"Michael M.","family":"Ward","sequence":"first","affiliation":[{"name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases NIH Bethesda Maryland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,12,15]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/RHU.0000000000000138"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00573449"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2009.07.003"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-011-1313-8"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2007.07.014"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-15-344"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/kep174"},{"key":"e_1_2_6_9_1","first-page":"1704","article-title":"Total hip arthroplasty in patients with ankylosing spondylitis: longterm followup","volume":"22","author":"Shih LY","year":"1995","journal-title":"J Rheumatol"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0883-5403(96)80180-X"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199708000-00010"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0883-5403(00)91155-0"},{"key":"e_1_2_6_13_1","first-page":"1862","article-title":"Total hip arthroplasty in ankylosing spondylitis: outcome in 340 patients","volume":"28","author":"Sweeney S","year":"2001","journal-title":"J Rheumatol"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1080\/00016470152846538"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1054\/arth.2002.32170"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aott.2016.06.010"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.37690"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2017.03.041"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2016.03.023"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2009.04.027"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.K.00072"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1097\/BLO.0b013e3180375514"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.I.01477"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-010-1354-0"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.22682"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/pds.3952"},{"key":"e_1_2_6_27_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.D.02441"},{"key":"e_1_2_6_28_1","unstructured":"Yale New Haven Health Services Corporation\/Center for Outcomes Research and Evaluation.2013 Measures Update and Specifications: Elective Primary Total Hip Arthroplasty (THA) And\/Or Total Knee Arthroplasty (TKA) Risk\u2010Standardized Complication Measure Version 2. 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