Frontal plane and sagittal plane balance following cotrel-dubousset instrumentation for idiopathic scoliosis

B. S. Richards, J. G. Birch, J. A. Herring, C. E. Johnston, J. W. Roach

Research output: Contribution to journalArticle

122 Scopus citations


Postoperative decompensation has been reported following Cotrel-Dubousset instrumentation for right thoracic idiopathic scoliosis. The authors examined balance in the frontal and sagittal planes in 53 patients to determine optimal levels for fusion. King et al Type II curves, particularly larger ones, shifted to the left when the thoracic curve was fused to the stable vertebra or just below. Most Type III curves balanced well regardless of the levels fused. One-third of all patients developed mild radiographic junctional kyphosis at the lower level instrumented, more commonly when instrumentation ended at or above T12. The authors recommend fusing one segment short of the stable vertebra in most Type II curves. Large Type II curves need both curves fused for optimal balance. Type III curves can be fused short of the stable vertebra.

Original languageEnglish (US)
Pages (from-to)733-737
Number of pages5
Issue number7
StatePublished - Jul 1989



  • Balance
  • Cotrel-Dubousset instrumentation
  • Junctional kyphosis

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Clinical Neurology

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