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[The Cortel-Dubousset device: prospective study on derotation]

P Moens1, L Vanden Berghe, G Fabry

  • 1Département d'Orthopédie, U.Z. Pellenberg, K.U. Leuven, Belgique.

Revue De Chirurgie Orthopedique Et Reparatrice De L'Appareil Moteur
|January 1, 1995
PubMed
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Cotrel-Dubousset (CD) instrumentation aims for 3D correction in idiopathic scoliosis. This study found no significant rotational change after CD instrumentation when considering the sagittal plane, regardless of curve type.

Area of Science:

  • Orthopedic surgery
  • Spinal deformities

Background:

  • Idiopathic scoliosis requires effective 3D correction.
  • Cotrel-Dubousset (CD) instrumentation is a surgical technique for scoliosis treatment.

Purpose of the Study:

  • To prospectively evaluate apex derotation after CD instrumentation.
  • To assess rotational changes in idiopathic scoliosis using CT scans.

Main Methods:

  • 24 patients with idiopathic scoliosis underwent CD instrumentation.
  • Pre- and postoperative CT scans measured rotation angle relative to the sagittal plane (RA sag).
  • Statistical analysis (paired T-tests, Kruskal Wallis) evaluated rotational changes and correlations.

Main Results:

  • No statistically significant increase or decrease in sagittal rotation was observed post-CD instrumentation.

Related Experiment Videos

  • Rotational changes did not significantly correlate with the number of instrumented levels or King scoliosis types.

    • Conclusions:

    • Evaluating scoliosis rotation is complex; CT scans offer the best method.
    • Postoperative morphological changes can introduce errors in rotational measurements.
    • Literature review suggests variability in derotation outcomes with CD instrumentation.