{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T18:12:40Z","timestamp":1777659160585,"version":"3.51.4"},"reference-count":26,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2021,3,8]],"date-time":"2021-03-08T00:00:00Z","timestamp":1615161600000},"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":[[2023,3]]},"abstract":"<jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Retrospective review of consecutive series.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The study sought to assess the effect of prolonged pre-operative halo gravity traction (HGT) on the c-spine radiographs<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Data of 37 pediatric and adult patients who underwent \u2265 12wks pre-op HGT prior to definitive spine surgery from 2013-2015 at a single site in West Africa was reviewed. Radiographic assessment of the c-spine including ADI, SVA and C2-C7 Lordosis were done at pre HGT and at 4 weekly intervals. Paired T-Test was performed to evaluate changes in these parameters during HGT.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>37pts, 18\/19 (F\/M). Average age 18.2yrs. Diagnoses: 22 idiopathic, 6 congenital, 3 Post TB, 2 NM and 4 NF. Average duration of HGT: 125 days. Baseline coronal Cobb:130\u2009deg, corrected 30% in HGT; baseline sagittal Cobb:146\u2009deg, corrected 32% post HGT. Baseline ADI (3.17 \u00b1 0.63\u2009mm) did not change at 4wks ( P &gt; 0.05) but reduced at 8wks (2.80 \u00b1 0.56\u2009mm) and 12wks (2.67 \u00b1 0.51\u2009mm) post HGT ( P &lt; 0.05). Baseline HGT SVA (20.7 \u00b1 14.98\u2009mm) significantly improved at 4wks (11.55 \u00b1 10.26\u2009mm), 8wks (7.54 \u00b1 6.78\u2009mm) and 12wks (8.88 \u00b1 4.5\u2009mm) ( P &lt; 0.05). Baseline C2-C7 lordosis (43 \u00b1 20.1\u2009deg) reduced at 4wks (26 \u00b1 16.37\u2009deg), 8wks (17.8 \u00b1 14.77\u2009deg) and 12wks (16.7 \u00b1 11.33\u2009deg) post HGT ( P &lt; 0.05). There was no incidence of atlanto-axial instability on flexion extension radiographs at any interval.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Prolonged HGT, while providing partial correction of severe spine deformities, also appeared to have no adverse effect on atlanto-axial stability or cervical alignment. Therefore, HGT can be safely applied for several weeks in the preoperative management of severe spine deformities in pediatric\/adult patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/2192568221998644","type":"journal-article","created":{"date-parts":[[2021,3,8]],"date-time":"2021-03-08T04:13:50Z","timestamp":1615176830000},"page":"451-456","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["The Effect of Prolonged Pre-Operative Halo Gravity Traction for Severe Spinal Deformities on the Cervical Spine Radiographs"],"prefix":"10.1177","volume":"13","author":[{"given":"Kwadwo Poku","family":"Yankey","sequence":"first","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4842-6006","authenticated-orcid":false,"given":"Henry Ofori","family":"Duah","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristina","family":"Sacramento-Dom\u00ednguez","sequence":"additional","affiliation":[{"name":"Cl\u00ednica Universidad de Navarra, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henry Osei","family":"Tutu","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mabel Adobea","family":"Owiredu","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rufai","family":"Mahmud","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irene","family":"Wulff","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9692-3453","authenticated-orcid":false,"given":"Gerhard","family":"Ofori-Amankwah","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harry","family":"Akoto","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oheneba","family":"Boachie-Adjei","sequence":"additional","affiliation":[{"name":"FOCOS Orthopaedic Hospital, Accra, Ghana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"FOCOS Spine Research 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