Can the Sagittal Lumbar Curvature be Closely Approximated by an Ellipse?

Can the Sagittal Lumbar Curvature be Closely Approximated by an Ellipse?

  • Tadeusz J. Janik
  • Donald D. Harrison
  • Rene Cailliet
  • Stephan J. Troyanovich
  • Deed E. Harrison
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