Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis

A case-matched 2-year study

Behrooz A. Akbarnia, Jeff B. Pawelek, Kenneth M C Cheung, Gokhan Demirkiran, Hazem Elsebaie, John B. Emans, Charles E. Johnston, Gregory M. Mundis, Hilali Noordeen, David L. Skaggs, Paul D. Sponseller, George H. Thompson, Burt Yaszay, Muharrem Yazici

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Introduction Traditional growing rod (TGR) surgery is a treatment technique commonly used for progressive early-onset scoliosis. Studies have shown that repeated TGR lengthenings can significantly increase the risk of complications. Magnetically controlled growing rods (MCGR) are currently available outside of the United States and early results have been promising. The purpose of this study was to compare the effectiveness of MCGR versus TGR for the treatment of early-onset scoliosis.

Methods Magnetically controlled growing rod patients were selected based on the following criteria: aged less than 10 years, major curve greater than 30°, thoracic height less than 22 cm, no previous spine surgery, and minimum 2-year follow-up. A total of 17 MCGR patients met the inclusion criteria, 12 of whom had complete data available for analysis. Each MCGR patient was matched with a TGR patient by etiology, gender, single versus dual rods, preoperative age, and preoperative major curve.

Results Magnetically controlled growing rod patients had a mean age of 6.8 years and mean follow-up of 2.5 years. Mean follow-up was greater for TGR patients by 1.6 years. Major curve correction was similar between MCGR and TGR patients throughout treatment. The MCGR patients experienced an average of 8.1 mm/year increase in T1-S1 during the lengthening period, compared with 9.7 mm/year for TGR patients (p =.73). There was a mean increase in T1-T12 of 1.5 mm/year for MCGR patients and 2.3 mm/year for TGR patients (p =.83). The TGR patients had 73 open surgeries, 56 of which were lengthenings. The MCGR patients had 16 open surgeries and 137 noninvasive lengthenings. Three TGR patients underwent 5 unplanned revision surgeries whereas 3 MCGR patients underwent 4 unplanned revisions.

Conclusions Major curve correction was similar between MCGR and TGR patients throughout treatment. Annual T1-S1 and T1-12 growth was also similar between groups. The MCGR patients had 57 fewer surgical procedures than TGR patients. Incidence of unplanned surgical revisions as a result of complications was similar between groups.

Original languageEnglish (US)
Pages (from-to)493-497
Number of pages5
JournalSpine Deformity
Volume2
Issue number6
DOIs
StatePublished - Nov 1 2014

Fingerprint

Scoliosis
Therapeutics
Reoperation

Keywords

  • Case-matched comparative study
  • Early-onset scoliosis
  • Magnetically controlled growing rods
  • Traditional growing rod

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis : A case-matched 2-year study. / Akbarnia, Behrooz A.; Pawelek, Jeff B.; Cheung, Kenneth M C; Demirkiran, Gokhan; Elsebaie, Hazem; Emans, John B.; Johnston, Charles E.; Mundis, Gregory M.; Noordeen, Hilali; Skaggs, David L.; Sponseller, Paul D.; Thompson, George H.; Yaszay, Burt; Yazici, Muharrem.

In: Spine Deformity, Vol. 2, No. 6, 01.11.2014, p. 493-497.

Research output: Contribution to journalArticle

Akbarnia, BA, Pawelek, JB, Cheung, KMC, Demirkiran, G, Elsebaie, H, Emans, JB, Johnston, CE, Mundis, GM, Noordeen, H, Skaggs, DL, Sponseller, PD, Thompson, GH, Yaszay, B & Yazici, M 2014, 'Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis: A case-matched 2-year study', Spine Deformity, vol. 2, no. 6, pp. 493-497. https://doi.org/10.1016/j.jspd.2014.09.050
Akbarnia, Behrooz A. ; Pawelek, Jeff B. ; Cheung, Kenneth M C ; Demirkiran, Gokhan ; Elsebaie, Hazem ; Emans, John B. ; Johnston, Charles E. ; Mundis, Gregory M. ; Noordeen, Hilali ; Skaggs, David L. ; Sponseller, Paul D. ; Thompson, George H. ; Yaszay, Burt ; Yazici, Muharrem. / Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis : A case-matched 2-year study. In: Spine Deformity. 2014 ; Vol. 2, No. 6. pp. 493-497.
@article{c615713a9e81435e995e8b988f5db8ce,
title = "Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis: A case-matched 2-year study",
abstract = "Introduction Traditional growing rod (TGR) surgery is a treatment technique commonly used for progressive early-onset scoliosis. Studies have shown that repeated TGR lengthenings can significantly increase the risk of complications. Magnetically controlled growing rods (MCGR) are currently available outside of the United States and early results have been promising. The purpose of this study was to compare the effectiveness of MCGR versus TGR for the treatment of early-onset scoliosis.Methods Magnetically controlled growing rod patients were selected based on the following criteria: aged less than 10 years, major curve greater than 30°, thoracic height less than 22 cm, no previous spine surgery, and minimum 2-year follow-up. A total of 17 MCGR patients met the inclusion criteria, 12 of whom had complete data available for analysis. Each MCGR patient was matched with a TGR patient by etiology, gender, single versus dual rods, preoperative age, and preoperative major curve.Results Magnetically controlled growing rod patients had a mean age of 6.8 years and mean follow-up of 2.5 years. Mean follow-up was greater for TGR patients by 1.6 years. Major curve correction was similar between MCGR and TGR patients throughout treatment. The MCGR patients experienced an average of 8.1 mm/year increase in T1-S1 during the lengthening period, compared with 9.7 mm/year for TGR patients (p =.73). There was a mean increase in T1-T12 of 1.5 mm/year for MCGR patients and 2.3 mm/year for TGR patients (p =.83). The TGR patients had 73 open surgeries, 56 of which were lengthenings. The MCGR patients had 16 open surgeries and 137 noninvasive lengthenings. Three TGR patients underwent 5 unplanned revision surgeries whereas 3 MCGR patients underwent 4 unplanned revisions.Conclusions Major curve correction was similar between MCGR and TGR patients throughout treatment. Annual T1-S1 and T1-12 growth was also similar between groups. The MCGR patients had 57 fewer surgical procedures than TGR patients. Incidence of unplanned surgical revisions as a result of complications was similar between groups.",
keywords = "Case-matched comparative study, Early-onset scoliosis, Magnetically controlled growing rods, Traditional growing rod",
author = "Akbarnia, {Behrooz A.} and Pawelek, {Jeff B.} and Cheung, {Kenneth M C} and Gokhan Demirkiran and Hazem Elsebaie and Emans, {John B.} and Johnston, {Charles E.} and Mundis, {Gregory M.} and Hilali Noordeen and Skaggs, {David L.} and Sponseller, {Paul D.} and Thompson, {George H.} and Burt Yaszay and Muharrem Yazici",
year = "2014",
month = "11",
day = "1",
doi = "10.1016/j.jspd.2014.09.050",
language = "English (US)",
volume = "2",
pages = "493--497",
journal = "Spine Deformity",
issn = "2212-134X",
publisher = "Elsevier BV",
number = "6",

}

TY - JOUR

T1 - Traditional growing rods versus magnetically controlled growing rods for the surgical treatment of early-onset scoliosis

T2 - A case-matched 2-year study

AU - Akbarnia, Behrooz A.

AU - Pawelek, Jeff B.

AU - Cheung, Kenneth M C

AU - Demirkiran, Gokhan

AU - Elsebaie, Hazem

AU - Emans, John B.

AU - Johnston, Charles E.

AU - Mundis, Gregory M.

AU - Noordeen, Hilali

AU - Skaggs, David L.

AU - Sponseller, Paul D.

AU - Thompson, George H.

AU - Yaszay, Burt

AU - Yazici, Muharrem

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Introduction Traditional growing rod (TGR) surgery is a treatment technique commonly used for progressive early-onset scoliosis. Studies have shown that repeated TGR lengthenings can significantly increase the risk of complications. Magnetically controlled growing rods (MCGR) are currently available outside of the United States and early results have been promising. The purpose of this study was to compare the effectiveness of MCGR versus TGR for the treatment of early-onset scoliosis.Methods Magnetically controlled growing rod patients were selected based on the following criteria: aged less than 10 years, major curve greater than 30°, thoracic height less than 22 cm, no previous spine surgery, and minimum 2-year follow-up. A total of 17 MCGR patients met the inclusion criteria, 12 of whom had complete data available for analysis. Each MCGR patient was matched with a TGR patient by etiology, gender, single versus dual rods, preoperative age, and preoperative major curve.Results Magnetically controlled growing rod patients had a mean age of 6.8 years and mean follow-up of 2.5 years. Mean follow-up was greater for TGR patients by 1.6 years. Major curve correction was similar between MCGR and TGR patients throughout treatment. The MCGR patients experienced an average of 8.1 mm/year increase in T1-S1 during the lengthening period, compared with 9.7 mm/year for TGR patients (p =.73). There was a mean increase in T1-T12 of 1.5 mm/year for MCGR patients and 2.3 mm/year for TGR patients (p =.83). The TGR patients had 73 open surgeries, 56 of which were lengthenings. The MCGR patients had 16 open surgeries and 137 noninvasive lengthenings. Three TGR patients underwent 5 unplanned revision surgeries whereas 3 MCGR patients underwent 4 unplanned revisions.Conclusions Major curve correction was similar between MCGR and TGR patients throughout treatment. Annual T1-S1 and T1-12 growth was also similar between groups. The MCGR patients had 57 fewer surgical procedures than TGR patients. Incidence of unplanned surgical revisions as a result of complications was similar between groups.

AB - Introduction Traditional growing rod (TGR) surgery is a treatment technique commonly used for progressive early-onset scoliosis. Studies have shown that repeated TGR lengthenings can significantly increase the risk of complications. Magnetically controlled growing rods (MCGR) are currently available outside of the United States and early results have been promising. The purpose of this study was to compare the effectiveness of MCGR versus TGR for the treatment of early-onset scoliosis.Methods Magnetically controlled growing rod patients were selected based on the following criteria: aged less than 10 years, major curve greater than 30°, thoracic height less than 22 cm, no previous spine surgery, and minimum 2-year follow-up. A total of 17 MCGR patients met the inclusion criteria, 12 of whom had complete data available for analysis. Each MCGR patient was matched with a TGR patient by etiology, gender, single versus dual rods, preoperative age, and preoperative major curve.Results Magnetically controlled growing rod patients had a mean age of 6.8 years and mean follow-up of 2.5 years. Mean follow-up was greater for TGR patients by 1.6 years. Major curve correction was similar between MCGR and TGR patients throughout treatment. The MCGR patients experienced an average of 8.1 mm/year increase in T1-S1 during the lengthening period, compared with 9.7 mm/year for TGR patients (p =.73). There was a mean increase in T1-T12 of 1.5 mm/year for MCGR patients and 2.3 mm/year for TGR patients (p =.83). The TGR patients had 73 open surgeries, 56 of which were lengthenings. The MCGR patients had 16 open surgeries and 137 noninvasive lengthenings. Three TGR patients underwent 5 unplanned revision surgeries whereas 3 MCGR patients underwent 4 unplanned revisions.Conclusions Major curve correction was similar between MCGR and TGR patients throughout treatment. Annual T1-S1 and T1-12 growth was also similar between groups. The MCGR patients had 57 fewer surgical procedures than TGR patients. Incidence of unplanned surgical revisions as a result of complications was similar between groups.

KW - Case-matched comparative study

KW - Early-onset scoliosis

KW - Magnetically controlled growing rods

KW - Traditional growing rod

UR - http://www.scopus.com/inward/record.url?scp=84908364039&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908364039&partnerID=8YFLogxK

U2 - 10.1016/j.jspd.2014.09.050

DO - 10.1016/j.jspd.2014.09.050

M3 - Article

VL - 2

SP - 493

EP - 497

JO - Spine Deformity

JF - Spine Deformity

SN - 2212-134X

IS - 6

ER -