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European Spine Journal
Published in: European Spine Journal 10/2016

01-10-2016 | Original Article

Preliminary comparison of primary and conversion surgery with magnetically controlled growing rods in children with early onset scoliosis

Authors: Heli Keskinen, Ilkka Helenius, Colin Nnadi, Kenneth Cheung, J. Ferguson, Gregory Mundis, Jeff Pawelek, Behrooz A. Akbarnia

Published in: European Spine Journal | Issue 10/2016

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Abstract

Purpose

Non-invasive distraction of magnetically controlled growing rods (MCGR) avoids repeated surgical lengthening in patients with early onset scoliosis, but it is not known how effective this technique is in previously operated children.

Methods

In a retrospective, multicentre study, the data were obtained for 27 primary (P) patients [mean age 7.0 (2.4–10.7) years at surgery] and 23 conversion (C) patients [mean age 7.7 (3.6–11.0) years at conversion from standard growing rods] with 1-year follow-up.

Results

The mean major curve was 63.9° in the P group and 46.5° in the C group at baseline (preoperatively, p = 0.0009) and 39.5° and 39.6°, respectively, at 1-year follow-up (p = 0.99). The mean percentage change of spinal growth from baseline to 1-year follow-up was 18.3 % in the P group and 6.5 % in the C group (p = 0.007). Comparing the spinal growth from postoperative to 1-year follow-up no statistical difference was observed between the study groups (1.8 % P vs −2.2 % C, p = 0.09).

Conclusions

Scoliosis can be equally controlled after conversion from traditional growing rods into MCGR, but spinal growth from baseline is less in the conversion patients as compared with the primary group.

Level of evidence

III.
Literature
1.
Williams BA, Matsumoto H, McCalla DJ et al (2014) Development and initial validation of the Classification of Early-Onset Scoliosis (C-EOS). J Bone Joint Surg [Am] 96:1359–1367CrossRef
2.
Akbarnia BA (2007) Management themes in early onset scoliosis. J Bone Joint Surg [Am] 89-A(Suppl 1):42–54CrossRef
3.
Fernandes P, Weinstein SL (2007) Natural history of early onset scoliosis. J Bone Joint Surg [Am] 89-A:21–33CrossRef
4.
Pehrsson K, Larsson S, Oden A, Nachemson A (1992) Long-term follow-up of patients with untreated scoliosis. A study of mortality, causes of death, and symptoms. Spine 17:1091–1096CrossRefPubMed
5.
Karol LA, Johnston C, Mladenov K et al (2008) Pulmonary function following early thoracic fusion in non-neuromuscular scoliosis. J Bone Joint Surg [Am] 90-A:1272–1281CrossRef
6.
Akbarnia BA, Breakwell LM, Marks DS et al (2008) Dual growing rod technique followed for 3–11 years until final fusion: the effect of frequency of lengthening. Spine 33:984–990CrossRefPubMed
7.
McCarthy RE, Luhmann S, Lenke L, McCullough FL (2014) The Shilla growth guidance technique for early-onset spinal deformities at 2-year follow-up: a preliminary report. J Pediatr Orthop 34:1–7CrossRefPubMed
8.
Lenke LG, Dobbs MB (2007) Management of juvenile idiopathic scoliosis. J Bone Joint Surg [Am] 89-A(Suppl. 1):55–63CrossRef
9.
Hasler CC, Mehrkens A, Hefti F (2010) Efficacy and safety of VEPTR instrumentation for progressive spine deformities in young children without rib fusions. Eur Spine J 19:400–408CrossRefPubMed
10.
Murphy RF, Moisan A, Kelly DM et al (2016) Use of Vertical Expandable Prosthetic Titanium Rib (VEPTR) in the treatment of congenital scoliosis without fused ribs. J Pediatr Orthop 36(4):329–335CrossRefPubMed
11.
Dannawi Z, Altaf F, Harshavardhana NS et al (2013) Early results of a remotely-operated magnetic growth rod in early-onset scoliosis. Bone Joint J 95-B:75–80CrossRefPubMed
12.
Cheung KM, Cheung JP, Samartzis D et al (2012) Magnetically controlled growing rods for severe spinal curvature in young children: a prospective case series. Lancet 379:1967–1974CrossRefPubMed
13.
Hickey BA, Towriss C, Baxter G et al (2014) Early experience of MAGEC magnetic growing rods in the treatment of early onset scoliosis. Eur Spine J 23:61–65CrossRefPubMedCentral
14.
Sankar WN, Skaggs DL, Yazici M et al (2011) Lengthening of dual growing rods and the law of diminishing returns. Spine (Phila Pa 1976 36:806–809CrossRef
15.
Campbell RM Jr, Smith MD, Mayes TC et al (2003) The characteristics of thoracic insufficiency syndrome associated with fused ribs and congenital scoliosis. J Bone Joint Surg Am 85-A:399–408PubMed
16.
Akbarnia BA, Cheung K, Noordeen H et al (2013) Next generation of growth-sparing techniques: preliminary clinical results of a magnetically controlled growing rod in 14 patients with early-onset scoliosis. Spine (Phila Pa 1976) 38:665–670CrossRef
17.
Flynn JM, Tomlinson LA, Pawelek J et al (2013) Growing-rod graduates: lessons learned from ninety-nine patients who completed lengthening. J Bone Joint Surg 95-A:1745–1750CrossRef
18.
Rolton D, Richards J, Nnadi C (2014) Magnetic controlled growth rods versus conventional growing rod systems in the treatment of early onset scoliosis: a cost comparison. Eur Spine J 24(7):1457–1461CrossRefPubMed
19.
Kabirian N, Akbarnia BA, Pawelek JB et al (2014) Deep surgical site infection following 2344 growing-rod procedures for early-onset scoliosis: risk factors and clinical consequences. J Bone Joint Surg Am 96-A:e128CrossRef
20.
Yoon WW, Sedra F, Shah S et al (2014) Improvement of pulmonary function in children with early-onset scoliosis using magnetic growth rods. Spine 39:1196–1202CrossRefPubMed
21.
Noordeen HM, Shah SA, Elsebaie HB et al (2011) In vivo distraction force and length measurements of growing rods: which factors influence the ability to lengthen? Spine 36:2299–2303CrossRefPubMed
Metadata
Title
Preliminary comparison of primary and conversion surgery with magnetically controlled growing rods in children with early onset scoliosis
Authors
Heli Keskinen
Ilkka Helenius
Colin Nnadi
Kenneth Cheung
J. Ferguson
Gregory Mundis
Jeff Pawelek
Behrooz A. Akbarnia
Publication date
01-10-2016
Publisher
Springer Berlin Heidelberg
Published in
European Spine Journal / Issue 10/2016
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI
https://doi.org/10.1007/s00586-016-4597-y

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