{
  "abstract": "Study design: Retrospective study.\n\nObjective: To analyze the flexibility of severe scoliosis with cobb angle ≥90o, comparing between the supine traction radiograph versus the physician supervised supine side bending film.\n\nMethods: 72 severe idiopathic scoliosis patients between 2015 to 2023 in a single academic institution who underwent single-staged posterior spinal fusion with curves more than ≥90o with available anteroposterior, traction and side bending radiographs were recruited.\n\nResults: 58 patients had severe curves in the main thoracic (MT) region, with mean preoperative Cobb angle of 107.3±16.6° and postoperative Cobb angle of 51.2±15.5°. 18 patients had severe curves at thoracolumbar/lumbar (TL/L) region, with mean preoperative Cobb angle of 99.8±8.2° and postoperative Cobb angle of 45.2±12.8°. The correction rates for MT and TL/L curve is 52.7±11.1° and 55.0±11.1° respectively. No significant differences were observed between sidebending (SB) and traction radiographs in assessing MT curve flexibility (34.7±12.4% vs. 34.5±11.8%, respectively; p=0.907) or in the corresponding correction indices (1.7±0.5 vs. 1.7±0.9, respectively; p=0.461). However, TL/L curves had a significant difference in flexibility comparing SB (46.0±12.6%) and traction radiographs (42.0±11.5%) (p=0.008) and comparing the side bending correction index (SBCI) (1.2±0.2) and traction correction index (TCI) (1.4±0.3) (p=0.010). The SBCI for TL/L curve was closer to 1, indicating that the Cobb angle on SB radiographs for TL/L curves could more accurately predict the postoperative Cobb angle.\n\nConclusion: In severe TL/L curves, physician-supervised supine side bending (PSSB) radiographs may provide a more accurate assessment of curve flexibility, as reflected by a correction index closer to 1. These findings suggest that PSSB radiographs may be a useful radiographic assessment for evaluating TL/L curve flexibility and guide preoperative planning in patients with severe idiopathic scoliosis.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Orthopaedic Surgery, National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL), Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Chris Yin Wei Chan",
      "orcid": "0000-0001-7245-0295"
    },
    {
      "affs": [
        0
      ],
      "name": "Josephine Rebecca Chandren"
    },
    {
      "affs": [
        0
      ],
      "name": "Evonne Yee Wern Tan"
    },
    {
      "affs": [
        0
      ],
      "name": "Saturveithan Chandirasegaran"
    },
    {
      "affs": [
        0
      ],
      "name": "Chee Kidd Chiu",
      "orcid": "0000-0002-4198-1541"
    },
    {
      "affs": [
        0
      ],
      "name": "Mun Keong Kwan",
      "orcid": "0000-0002-9512-3155"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8g4d8mw0tjz7h.bib",
  "cited_by": 0,
  "doi": "10.1177/21925682261505373",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13735756/",
  "id": "8g4d8mw0tjz7h",
  "issns": [
    "2192-5682",
    "2192-5690"
  ],
  "landing_url": "https://doi.org/10.1177/21925682261505373",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Original Research"
    ],
    [
      "openalex",
      "2746|Scoliosis diagnosis and treatment"
    ]
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  "openalex": "W7225263574",
  "pdf_url": null,
  "pmcid": "PMC13735756",
  "pmid": "42981483",
  "published": "2026-11-04",
  "publisher": "SAGE Publications",
  "ris": "https://research.draconitic.com/paper/8g4d8mw0tjz7h.ris",
  "sources": [
    {
      "first_seen": "2026-11-09T12:21:23Z",
      "native_id": "PMC13735756",
      "source": "pmc",
      "url": "https://doi.org/10.1177/21925682261505373"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2746|Scoliosis diagnosis and treatment",
      "subfield": "surgery"
    }
  ],
  "title": "Assessment of Curve Flexibility in Idiopathic Scoliosis Patients With Severe Scoliosis (Cobb Angle ≥ 90o): Comparison Between the Supine Traction Radiograph Versus the Physician Supervised Supine Side Bending Radiographs",
  "title_text": "Assessment of Curve Flexibility in Idiopathic Scoliosis Patients With Severe Scoliosis (Cobb Angle ≥ 90o): Comparison Between the Supine Traction Radiograph Versus the Physician Supervised Supine Side Bending Radiographs",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T12:21:23Z",
  "url": "https://research.draconitic.com/paper/8g4d8mw0tjz7h",
  "venue": "Global Spine Journal",
  "versions": []
}