Improvements in measuring vertebral rotation from the projections of the pedicles

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Abstract

In radiological assessment of scoliosis, some prognostic value is given to vertebral rotation. An improved method for measuring vertebral rotation is introduced. It differs from the known methods by a specific selection of vertebral model parameters describing location of pedicles relative to the vertebral body. Vertebral model parameters have been determined from 150 axial X-rays of vertebral specimens. Application of measured parameters yields accuracy of about ± 5° in assessing vertebral rotation. Good agreement is found with parameters of six scoliotic vertebrae, investigated by CT-scans. A method for clinical presentation of measurement results is proposed.

References (18)

  • B. Drerup

    Principles of measurement of vertebral rotation from frontal projections of the pedicles

    J. Biomechanics

    (1984)
  • E. Hierholzer et al.

    Three-dimensional shape analysis of the scoliotic spine using invariant shape parameters

    J. Biomechanics

    (1982)
  • G.W. Armstrong et al.

    Nonstandard vertebral rotation in scoliosis screening patients

    Spine

    (1982)
  • M. Coetsier et al.

    A new radiographic method for measuring vertebral rotation in scoliosis

    Acta orthop. belg.

    (1977)
  • A.A. DeSmet et al.

    A clinical study of the differences between the scoliotic angle on posterioanterior and anteroposterior radiographs

    J. Bone Jt Surg.

    (1982)
  • M. Fait et al.

    Establishing of the rotation angle in the vertebra

    Scripta Med.

    (1970)
  • W. Frobin

    Die Bestimmung der räumlichen Richtung der Kniegelenksachse mit Stereo-Röntgen und 90 Grad Röntgen

    Interner Bericht SFB 88/C1

    (1980)
  • M. Horst et al.

    Measurement of the distribution of axial stress on the endplate of the vertebral body

    Spine

    (1981)
  • M. Horst

    Mechanische Beanspruchung der Wirbelkörperendplatte

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