{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T20:39:55Z","timestamp":1771706395172,"version":"3.50.1"},"reference-count":36,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2012,9]]},"abstract":"\nObject<\/jats:title>\nPedicle screw fixation has been theorized to provide better correction of scoliotic deformity, but controversy over the benefits of pedicle screw\u2013only constructs remains, and the longer-term impact of pedicle screw fixation as compared with hybrid constructs is unclear. In this study, a retrospective review of a prospectively collected database was conducted to determine the longer-term impact of pedicle screw fixation as compared with hybrid constructs in patients with adolescent idiopathic scoliosis (AIS).<\/jats:p><\/jats:sec>\n\nMethods<\/jats:title>\nThe authors retrospectively reviewed a multicenter database of pediatric patients (ages \u2264 18) from 1995 to 2006 and identified 127 patients with Lenke Type 1\u20134 AIS curves with a minimum 5 years of follow-up. Patients were divided into 2 cohorts based on whether they had undergone pedicle screw fixation or fixation with hybrid constructs.<\/jats:p><\/jats:sec>\n\nResults<\/jats:title>\nThe mean main thoracic curvature of 56.1\u00b0 \u00b1 13.0\u00b0, which corrected to 14.9\u00b0 \u00b1 9.3\u00b0, translated into a mean correction of 73% (p < 0.01). The curve was 19.4\u00b0 \u00b1 10.6\u00b0 at 2-year follow-up and 20.5\u00b0 \u00b1 10.4\u00b0 at 5 years. When comparing preoperative parameters between the groups, differences were noted in the magnitude of the main thoracic curve (p = 0.04), flexibility of the main thoracic curve (p = 0.02), coronal balance (p = 0.04), T2\u201312 kyphosis (p = 0.02), and sex (p = 0.02). The pedicle screw cohort had fewer spinal segments instrumented (p < 0.01), fewer anterior releases performed (p = 0.02), and fewer thoracoplasties performed (p < 0.01). By 5 years of follow-up, significant differences were apparent between the two cohorts with respect to upper thoracic curvature (p = 0.01), T2\u201312 (p = 0.02) and T5\u201312 (p = 0.02) kyphosis, lumbar lordosis (p < 0.01), and sagittal balance (p = 0.01).<\/jats:p><\/jats:sec>\n\nConclusions<\/jats:title>\nAlthough some preoperative differences did exist, outcomes were comparable between hybrid and screw constructs at 2 and 5 years. However, hybrid constructs required more concurrent anterior releases and thoracoplasties to achieve similar results.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2012.6.spine1215","type":"journal-article","created":{"date-parts":[[2012,7,21]],"date-time":"2012-07-21T00:19:25Z","timestamp":1342829965000},"page":"212-219","source":"Crossref","is-referenced-by-count":16,"title":["Comparison of 5-year outcomes between pedicle screw and hybrid constructs in adolescent idiopathic scoliosis"],"prefix":"10.3171","volume":"17","author":[{"given":"Steven W.","family":"Hwang","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amer F.","family":"Samdani","sequence":"additional","affiliation":[{"name":"Shriners Hospital for Children\u2013Philadelphia, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ben","family":"Wormser","sequence":"additional","affiliation":[{"name":"Shriners Hospital for Children\u2013Philadelphia, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hari","family":"Amin","sequence":"additional","affiliation":[{"name":"Shriners Hospital for Children\u2013Philadelphia, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeff S.","family":"Kimball","sequence":"additional","affiliation":[{"name":"Shriners Hospital for Children\u2013Philadelphia, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert J.","family":"Ames","sequence":"additional","affiliation":[{"name":"Shriners Hospital for Children\u2013Philadelphia, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander S.","family":"Rothkrug","sequence":"additional","affiliation":[{"name":"Shriners Hospital for 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