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Improvements in measuring vertebral rotation from the projections of the pedicles

1985; Elsevier BV; Volume: 18; Issue: 5 Linguagem: Inglês

10.1016/0021-9290(85)90292-1

1873-2380

B. Drerup,

Spine and Intervertebral Disc Pathology

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.