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Journal of Bone and Joint Surgery - British Volume, Vol 86-B, Issue 2, 220-224.
doi: 10.1302/0301-620X.86B2.14178  
Copyright © 2004 by British Editorial Society of Bone and Joint Surgery
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Rotation of the spinal cord in idiopathic scoliosis

T. Maruta, MD, Orthopaedic Surgeon1; S. Minami, MD, Associate Professor1; H. Kitahara, MD, Director and Orthopaedic Surgeon1; K. Isobe, MD, Professor1; Y. Otsuka, MD, Director and Orthopaedic Surgeon2; Y. Nakata, MD, Consultant Orthopaedic Surgeon2; and H. Moriya, MD, Professor and Chairman1

1 Chiba Rehabilitation Centre, 1-45-2 Hondacho, Midori-Ku, Chiba 266-0005, Japan.
2 Department of Orthopaedic Surgery, National Chiba-Higashi Hospital, 673 Nitonacho, Chuo-Ku, Chiba 260-0801, Japan.

Correspondence should be sent to Dr T. Maruta.

We undertook a radiographic analysis with pre-operative computed tomographic myelography in 78 patients with idiopathic scoliosis in order to analyse rotation of the spinal cord and to investigate its clinical significance. The angle of rotation of the cord had a statistically significant relationship to both that of the apical vertebra and the size of the primary curve. The relationship between the rotation of the cord and that of the apical vertebra was divided into three types. The cord rotated in the same direction as the apical vertebra in 55 patients and rotated in the opposite direction in the remaining 23 patients. In the first group, the angle of rotation of the cord was more than that of the vertebra in six patients, but less than it in 49 patients. These results suggest that the neuraxis in idiopathic scoliosis may be under tension in the axial dimension.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General