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Kinematics of the Zielke procedure (VDS) in scoliosis

Intraoperative measurements

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Summary

The Zielke correction technique (VDS) has two parts, derotation and ventral convex-side compression. Both were studied by measurements made during and after the operation. Ventral derotation always creates lordosis. Lordosis can be maintained during compression by insertion of intervertebral bone blocks, or kyphosis created by omitting them.

Résumé

Le procédé VDS de correction de Zielke comporte deux étapes: dérotation à l'aide d'un matériel spécial, puis compression de la convexité par voie antérieure. Les deux composantes ont été analysées par des mesures per- et post-opératoires afin d'évaluer comment la technique VDS fonctionne dans les trois plans. Dans les interventions dorsales et lombaires, après dérotation isolée, on constate pendant l'opération une lordose notable et l'amélioration de la courbure atteint déjà 50% du résultat définitif. La compression terminale de la convexité aboutit à une cyphose dans le rachis dorsal et à une lordose au niveau des courbures lombaires où des greffes intersomatiques sont utilisées.

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Giehl, J.P., Heinrich, E. & Küsswetter, W. Kinematics of the Zielke procedure (VDS) in scoliosis. International Orthopaedics 17, 2–6 (1993). https://doi.org/10.1007/BF00195212

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