Supine thoracolumbar sagittal spine alignment: comparing computerized tomography and plain radiographs

Spine
Matthew P AbdelPaul A Anderson

Abstract

Imaging supine sagittal alignment study. Our goal was to determine differences between plain radiographs and computed tomography (CT) scans in supine sagittal alignment and to establish supine reference Cobb angles for both. Few studies have compared plain radiographs versus CT scans with regard to sagittal spine alignment. None have utilized supine patients. Fifty sequential blunt trauma individuals who had routine clearance of the thoracolumbar spine had their plain radiographs and CT scans reviewed independently by 2 spine surgeons. The Cobb method was utilized to determine angles at each spine level from T4 to L5. All imaging was obtained in the supine position, and no patient had acute ligamentous or bony pathology. Intraclass correlation coefficients (ICCs) were utilized to determine intraobserver, interobserver, and method reliability. Every level within the thoracic region was kyphotic, with a peak at T6. The lumbar region demonstrated a fairly linear progression from a near-neutral alignment at L1 to approximately 50° of lordosis at L5. The intraobserver reliability was consistent, with ICCs for Observer 1 plain radiographs at 0.653, Observer 2 plain radiographs at 0.891, Observer 1 CT scans at 0.677, and Observer 2 CT...Continue Reading

References

Sep 1, 1992·Journal of Spinal Disorders·D R BensonR F McLain
Sep 1, 1990·Spine·J P FarcyS D Glassman
Aug 1, 1988·The Journal of Trauma·D C ReidL A Saboe
Apr 1, 1982·AJR. American Journal of Roentgenology·M Brant-ZawadzkiL H Pitts
Apr 1, 1996·Journal of Spinal Disorders·K B WoodK Persson

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Citations

Jan 6, 2015·Asian Spine Journal·Zohreh HabibiHooshang Saberi
Aug 1, 2015·Global Spine Journal·Gregory D SchroederAlexander R Vaccaro
Jan 7, 2018·BMC Veterinary Research·Maria Claudia C M Inglez de SouzaSteven De Decker
Jul 27, 2017·Clinical Spine Surgery : a Spine Publication·Radek KaiserHossein Mehdian

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