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Thoraco-lumbar selective fusion in adolescent idiopathic scoliosis with Lenke C modifier curves: clinical and radiographic analysis at 10-year follow-up

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Abstract

Purpose

To examine the radiological and clinical outcomes of a single-center case series of selective thoracic fusions (STF) in adolescent idiopathic scoliosis with Lenke C modifier curves, with a long-term follow-up.

Methods

We evaluated at 6 months and 10 years different radiological parameters on both thoracic and lumbar districts: coronal curves, sagittal curves, apical vertebral translation (AVT), and apical vertebral rotation (AVR). The clinical outcome was determined using the SRS 22 score. Data were also analyzed dividing the patients by their Risser and Lenke scores.

Results

In examining 90 patients we reported a radiological benefit from STF on both thoracic and lumbar districts. The corrections in the values of both coronal curves, AVT, and AVR are relevant at 6 months and do not significantly vary at the latest follow-up. Sagittal curves are not relevantly affected at any time point. All the SRS 22 score evaluations showed significant improvement at 6 months, in particular, the self-image analysis. A further improvement was also reported at 10 years, in particular in pain and function scores. At no time point were significant differences retrieved by comparing SRS 22 results as divided by Risser or Lenke grading systems.

Conclusions

STF is an effective treatment option both in clinical and radiographical terms. The results at 10-year follow-up confirm both the stability of the correction and the improvement of the clinical outcome scores. Risser and Lenke grading systems are not relevant variables predictive of clinical efficacy.

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Authors and Affiliations

  1. Spinal Division I, IRCCS Galeazzi Orthopedic Institute, Via Galeazzi 4, 20161, Milan, Italy

    Laura Scaramuzzo, Fabrizio Giudici, Eleonora Caboni, Leone Minoia & Antonino Zagra

  2. Neurosurgery, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy

    Daniele Bongetta

  3. Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Università degli Studi di Pavia, Corso Strada Nuova 65, 27100, Pavia, Italy

    Daniele Bongetta

Authors
  1. Laura Scaramuzzo
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  2. Fabrizio Giudici
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  3. Daniele Bongetta
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  4. Eleonora Caboni
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  5. Leone Minoia
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  6. Antonino Zagra
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Correspondence to Daniele Bongetta.

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Scaramuzzo, L., Giudici, F., Bongetta, D. et al. Thoraco-lumbar selective fusion in adolescent idiopathic scoliosis with Lenke C modifier curves: clinical and radiographic analysis at 10-year follow-up. Eur Spine J 26 (Suppl 4), 514–523 (2017). https://doi.org/10.1007/s00586-017-5152-1

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  • DOI: https://doi.org/10.1007/s00586-017-5152-1

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