{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T16:49:07Z","timestamp":1790614147612,"version":"4.1.0"},"reference-count":41,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","license":[{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Fusionless techniques for the treatment of neuromuscular early-onset scoliosis (EOS) are increasingly used to preserve spinal and thoracic growth and to postpone posterior spinal fusion (PSF). These techniques have greatly improved thanks to magnetically controlled growing rods, which allow the avoidance of repeated surgery. However, the surgery-related complication rate remains high. The objective of the current study was to report the preliminary outcomes of 21 patients with neuromuscular EOS who were treated with a 1-way self-expanding rod (OWSER). This device was designed to avoid repeated surgery and preserve spinal and thoracic growth thanks to its free rod sliding.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients with neuromuscular EOS who underwent OWSER fixation were prospectively reviewed; follow-up was a minimum of 3 years. The instrumentation relies on a bipolar construct from T1 to the sacrum, with proximal fixation by double thoracic hook-claws and distal fixation by iliosacral screws. The device comprises a rod with a notched part sliding in 1 direction inside a domino. Changes in Cobb angle, pelvic obliquity, thoracic kyphosis, lumbar lordosis, T1-S1 and T1-T12 length, space available for the lung, and chest width were assessed. Complications were reviewed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The mean age at surgery was 10.5 years. The mean follow-up was 3.9 years. The mean pelvic obliquity improved from 20\u00b0 preoperatively to 8\u00b0 postoperatively and to 6\u00b0 at the latest follow-up. The mean Cobb angle improved from 66\u00b0 preoperatively to 38\u00b0 postoperatively and to 32\u00b0 at the latest follow-up. The mean preoperative kyphosis was reduced from 41\u00b0 to 26\u00b0 at the latest follow-up (p = 0.14). The mean lordosis was 34\u00b0 preoperatively and 38\u00b0 at the latest follow-up. The mean growth per month was 0.8 mm for the T1-T12 segment and 1.5 mm for T1-S1. The global complication rate was 38% (2 surgical site infections, 3 cases of lack of rod expansion, 1 case of pyelonephritis, and 2 central venous catheter-related infections). No PSF had been performed at the latest follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Use of the OWSER with a minimally invasive bipolar technique for neuromuscular EOS provided satisfactory correction of spinal and pelvic deformities at 3 years of follow-up. A longer follow-up is required.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence:<\/jats:title>\n                    <jats:p>\n                      Therapeutic\n                      <jats:underline>Level IV<\/jats:underline>\n                      . See Instructions for Authors for a complete description of levels of evidence.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.oa.21.00089","type":"journal-article","created":{"date-parts":[[2021,12,18]],"date-time":"2021-12-18T06:00:07Z","timestamp":1639807207000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":16,"title":["One-Way Self-Expanding Rod in Neuromuscular Scoliosis"],"prefix":"10.2106","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3070-0545","authenticated-orcid":false,"given":"M.","family":"Gaume","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Necker\u2013Enfants Malades Hospital, Assistance Publique H\u00f4pitaux de Paris, University of Paris, Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6837-8868","authenticated-orcid":false,"given":"R.","family":"Hajj","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Necker\u2013Enfants Malades Hospital, Assistance Publique H\u00f4pitaux de Paris, University of Paris, Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7684-036X","authenticated-orcid":false,"given":"N.","family":"Khouri","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Necker\u2013Enfants Malades Hospital, Assistance Publique H\u00f4pitaux de Paris, University of Paris, Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5629-320X","authenticated-orcid":false,"given":"M.B.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, The Royal Children\u2019s Hospital, Melbourne, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4691-4698","authenticated-orcid":false,"given":"L.","family":"Miladi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Necker\u2013Enfants Malades Hospital, Assistance Publique H\u00f4pitaux de Paris, University of Paris, Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2021,10]]},"reference":[{"issue":"2","key":"R1-20240801","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/j.jspd.2015.01.002","article-title":"Early Onset Scoliosis Consensus Statement, SRS Growing Spine Committee, 2015","volume":"3","author":"Skaggs","year":"2015","journal-title":"Spine Deform"},{"issue":"3","key":"R2-20240801","doi-asserted-by":"crossref","first-page":"384","DOI":"10.1007\/s00586-009-1198-z","article-title":"Treatment and complications in flaccid neuromuscular scoliosis (Duchenne muscular dystrophy and spinal muscular atrophy) with posterior-only pedicle screw instrumentation","volume":"19","author":"Modi","year":"2010","journal-title":"Eur Spine J"},{"issue":"11","key":"R3-20240801","doi-asserted-by":"crossref","first-page":"1167","DOI":"10.1097\/BRS.0b013e31819c38b7","article-title":"Surgical correction and fusion using posterior-only pedicle screw construct for neuropathic scoliosis in patients with cerebral palsy: a three-year follow-up study","volume":"34","author":"Modi","year":"2009","journal-title":"Spine (Phila Pa 1976)"},{"issue":"5","key":"R4-20240801","doi-asserted-by":"crossref","first-page":"1356","DOI":"10.1007\/s11999-011-1783-4","article-title":"Surgical technique: modern Luqu\u00e9 trolley, a self-growing rod technique","volume":"469","author":"Ouellet","year":"2011","journal-title":"Clin Orthop Relat 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