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The importance of spinopelvic parameters in patients with lumbar disc lesions

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Abstract.

Using a special software program we measured spinopelvic parameters on digitised radiographs of the entire spine and the pelvis of 50 patients with lumbar disc herniation and compared these with the same measurements on 30 healthy subjects. In the disc hernia group the patients had a relatively straight spine in the sagittal plane. The sacrum was more vertical, and the value of the lumbar lordosis was lower, as was the amplitude of the spinal curvatures, when compared with those of the healthy group. This results in a higher gravitational compressive force which may, in turn, lead to progressive degeneration of the discs. The anterior shift of the line of gravity may cause spinopelvic instability, and contraction of the posterior spinal muscles in trying to balance this disturbed spatial relationship may produce back pain.

Résumé.

Avec un logiciel spécial nous avons mesuré des paramètres rachidiens et pelviens sur les radiographies numérisées de 50 patients avec hernie discale lombaire et de 30 sujets sains. Dans le groupe avec hernie discale les patients avaient une colonne vertébrale relativement droite dans le plan sagittal. Le sacrum était plus vertical, la lordose lombaire plus discrète et donc l'amplitude des courbures vertébrales plus faible en comparaison du groupe sain. Cela peut mener à la dégénérescence progressive des disques, par suite d'une plus grande force compressive gravitationnelle. La modification de la ligne de gravité antérieure peut causer l'instabilité rachidienne – pelvienne. Les muscles vertébraux postérieurs peuvent avoir tendance à corriger ce déséquilibre spatial ce qui peut causer des douleurs postérieures.

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Rajnics, .P., Templier, .A., Skalli, .W. et al. The importance of spinopelvic parameters in patients with lumbar disc lesions. International Orthopaedics (SICOT) 26, 104–108 (2002). https://doi.org/10.1007/s00264-001-0317-1

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  • DOI: https://doi.org/10.1007/s00264-001-0317-1

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