{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T18:18:24Z","timestamp":1777659504351,"version":"3.51.4"},"reference-count":33,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2020,10,1]],"date-time":"2020-10-01T00:00:00Z","timestamp":1601510400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Global Spine Journal"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Retrospective case series.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The purpose of this study is to evaluate the clinical and radiographic outcomes following revision surgery following Harrington rod instrumentation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients who underwent revision surgery with a minimum of 1-year follow-up for flatback syndrome following Harrington rod instrumentation for adolescent idiopathic scoliosis were identified from a multicenter dataset. Baseline demographics and intraoperative information were obtained. Preoperative, initial postoperative, and most recent spinopelvic parameters were compared. Postoperative complications and reoperations were subsequently evaluated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>A total of 41 patients met the inclusion criteria with an average follow-up of 27.7 months. Overall, 14 patients (34.1%) underwent a combined anterior-posterior fusion, and 27 (65.9%) underwent an osteotomy for correction. Preoperatively, the most common lower instrumented vertebra (LIV) was at L3 and L4 (61%), whereas 85% had a LIV to the pelvis after revision. The mean preoperative pelvic incidence\u2013lumbar lordosis mismatch and C7 sagittal vertical axis were 23.7\u00b0 and 89.6 mm. This was corrected to 8.1\u00b0 and 28.9 mm and maintained to 9.04\u00b0 and 34.4 mm at latest follow-up. Complications included deep wound infection (12.2%), durotomy (14.6%), implant related failures (14.6%), and temporary neurologic deficits (22.0%). Eight patients underwent further revision surgery at an average of 7.4 months after initial revision.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>There are multiple surgical techniques to address symptomatic flatback syndrome in patients with previous Harrington rod instrumentation for adolescent idiopathic scoliosis. At an average of 27.7 months follow-up, pelvic incidence\u2013lumbar lordosis mismatch and C7 sagittal vertical axis can be successfully corrected and maintained. However, complication and reoperation rates remain high.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/2192568220960759","type":"journal-article","created":{"date-parts":[[2020,10,1]],"date-time":"2020-10-01T05:35:00Z","timestamp":1601530500000},"page":"654-662","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Revision Strategies for Harrington Rod Instrumentation: Radiographic Outcomes and Complications"],"prefix":"10.1177","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4787-1538","authenticated-orcid":false,"given":"Philip K.","family":"Louie","sequence":"first","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sravisht","family":"Iyer","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krishn","family":"Khanna","sequence":"additional","affiliation":[{"name":"Rush University Medical Center, Chicago, IL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Garrett K.","family":"Harada","sequence":"additional","affiliation":[{"name":"Rush University Medical Center, Chicago, IL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alina","family":"Khalid","sequence":"additional","affiliation":[{"name":"Rush University Medical Center, Chicago, IL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Munish","family":"Gupta","sequence":"additional","affiliation":[{"name":"Washington University at St Louis, St Louis, MO, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Douglas","family":"Burton","sequence":"additional","affiliation":[{"name":"University of Kansas, Kansas City, KS, 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USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Han Jo","family":"Kim","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, 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