What Is the Actual 3D Representation of the Rib Vertebra Angle Difference (Mehta Angle)?

Spine
Rob C BrinkR M Castelein

Abstract

Cross-sectional study. To establish the relevance of the conventional two-dimensional (2D) rib vertebra angle difference (RVAD) and the relationship with the complex three-dimensional (3D) apical morphology in scoliosis. The RVAD, also known as Mehta angle, describes apical rib asymmetry on conventional radiographs and was introduced as a prognostic factor for curve severity in early onset scoliosis, and later applied to other types of scoliosis as well. An existing idiopathic scoliosis database of high-resolution computed tomography scans used in previous work, acquired for spinal navigation, was used. Eighty-eight patients (Cobb angle 46°-109°) were included. Cobb angle and 2D RVAD, as described by Mehta, were measured on the conventional radiographs and coronal digitally reconstructed radiographs (DRR) of the prone computed tomography scans. A previously validated, semiautomatic image processing technique was used to acquire complete 3D spinal reconstructions for the measurement of the 3D RVAD in a reconstructed true coronal plane, axial rotation, and sagittal morphology. The 2D RVAD on the x-ray was on average 25.3° ± 11.0° and 25.6° ± 12.8° on the DRR (P = 0.990), but in the true 3D coronal view of the apex, hardly any asy...Continue Reading

References

Jan 1, 1997·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·B SevastikU Willers
Apr 1, 2005·Journal of Spinal Disorders & Techniques·Timothy R KukloLawrence G Lenke
Jun 2, 2005·Spine·Robert WatkinsThomas Hedman
Jun 3, 2006·Spine·Jan-Willem M KouwenhovenRené M Castelein
Sep 3, 2010·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Federico CanaveseAndré Kaelin
Jun 22, 2012·The Journal of Bone and Joint Surgery. American Volume·Jacqueline CoronaMichael G Vitale
Mar 24, 2016·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Javier PizonesEnrique Izquierdo
Jan 1, 2015·Nature Reviews. Disease Primers·Jack C ChengR Geoffrey Burwell

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Citations

Aug 1, 2020·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·James Farrell, Enrique Garrido
Nov 22, 2019·BMC Musculoskeletal Disorders·Tobias M BallhauseKiril Mladenov

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