Analysis of Vertebral Morphology in Idiopathic Scoliosis with Use of Magnetic Resonance Imaging and Multiplanar Reconstruction by Ulf R. Liljenqvist, Thomas Allkemper, Lars Hackenberg, Thomas M. Link, Jrn Steinbeck, and Henry F.H. Halm J Bone Joint Surg Am Volume 84(3): March 1, 2002 2002 by The Journal of Bone and Joint Surgery, Inc. Individually adjusted planes of reconstruction were used to allow a true transverse and frontal section of each vertebra. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Individually adjusted planes of reconstruction were used to allow a true transverse and frontal section of each vertebra. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Frontal plane reconstruction. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Illustration of a thoracic (left) and a lumbar (right) vertebra, demonstrating the measurements of the chord length (AC), the pedicle length (AB), the pedicle width (DE), and the transverse pedicle angle (F). Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Illustration of the measurement of the width of the pedicle-rib unit (AB). Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Illustration of the measurements of the width of the epidural space on the convex (aa) and concave (bb) sides of the curve and the distance between the vertebral body and the aorta (cc). Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Illustration of different pedicle shapes: round(A), oval (B), kidney-shaped (C), teardrop-shaped (D), and reverse teardrop-shaped (E). Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. True transverse section through an apical thoracic vertebra in a patient with a King type-II curve. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. True transverse section through an apical thoracic vertebra in a patient with a King type-II curve. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Illustration of the width of the epidural space on the concave and the convex sides of the curve as measured in the transverse plane. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Frontal section through the apex of a thoracic curve, demonstrating the asymmetrical pedicles and the shift of the dural sac toward the concavity. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc. Frontal section through the apex of a thoracic curve, demonstrating the asymmetrical pedicles and the shift of the dural sac toward the concavity. Ulf R. Liljenqvist et al. J Bone Joint Surg Am 2002;84: 2002 by The Journal of Bone and Joint Surgery, Inc.