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Reversing the concept: correction of adolescent idiopathic scoliosis using the convex rod de-rotation maneuver

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Abstract

Purpose

To show the radiological results of adolescent idiopathic scoliosis (AIS) patients treated with posterior fusion using all-pedicle-screw construct with correction carried out using a convex rod reduction technique.

Methods

Between October 2004 and June 2007, 42 AIS patients were treated with posterior fusion using all-pedicle-screw construct with correction done through the convex side. Two patients were lost to follow-up and were not included in the study. Forty patients had a minimum follow-up of 2 years. Patients were evaluated for the deformity correction in coronal and sagittal planes and for spinal balance.

Results

The mean preoperative Cobb angle of the major curve and secondary minor curves was 60° and 41°, respectively. Immediate postoperative mean Cobb angle of the major curve and secondary minor curves was 17° and 13°, respectively. Postoperative 2-year average major curve loss of correction was 7 %. Postoperative 2-year average minor curve loss of correction was 5 %. Preoperative thoracic kyphosis of 28° was changed to 22° in 2-years follow-up. The loss of thoracic kyphosis was most noted in hyperkyphotic patients.

Conclusions

The correction of AIS by convex-sided pedicular screws yields a coronal correction comparable to what is described in the literature for segmental concave-sided screws.

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Conflict of interest

None.

Author information

Authors and Affiliations

  1. Department of Orthopedic Surgery, Assaf Harofeh Medical Center, Zerifin, Israel

    Yigal Mirovsky, Vitaly Arnabitsky & Yael Gelfer

  2. The Spine Unit, Assaf Harofeh Medical Center, 70300, Zerifin, Israel

    Yoram Anekstein & Yossi Smorgick

  3. Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel

    Yoram Anekstein, Yigal Mirovsky, Vitaly Arnabitsky, Yael Gelfer & Yossi Smorgick

  4. Department of Orthopedic Surgery, William Beaumont Hospital, Royal Oak, MI, USA

    Ira Zaltz

Authors
  1. Yoram Anekstein
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  2. Yigal Mirovsky
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  3. Vitaly Arnabitsky
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  4. Yael Gelfer
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  5. Ira Zaltz
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  6. Yossi Smorgick
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Corresponding author

Correspondence to Yossi Smorgick.

Additional information

The study was approved by the Institutional Review Board of Assaf Harofeh Medical Center.

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Anekstein, Y., Mirovsky, Y., Arnabitsky, V. et al. Reversing the concept: correction of adolescent idiopathic scoliosis using the convex rod de-rotation maneuver. Eur Spine J 21, 1942–1949 (2012). https://doi.org/10.1007/s00586-012-2355-3

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  • DOI: https://doi.org/10.1007/s00586-012-2355-3

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