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Spine J. 2016 Apr;16(4 Suppl):S40-4. doi: 10.1016/j.spinee.2015.12.099. Epub 2016 Feb 2.

Do magnetic growing rods have lower complication rates compared with conventional growing rods?

Author information

1
Welsh Centre for Spinal Surgery & Trauma, University Hospital of Wales, Heath Park, Cardiff CF10 2FF, United Kingdom. Electronic address: karhao@gmail.com.
2
Welsh Centre for Spinal Surgery & Trauma, University Hospital of Wales, Heath Park, Cardiff CF10 2FF, United Kingdom.

Abstract

BACKGROUND CONTEXT:

The main advantage cited for the use of the magnetic controlled growing rod (MCGR) system over the conventional growing rod (CGR) in early-onset scoliosis is avoiding repeated invasive surgical procedures for lengthening, thus reducing, complications.

PURPOSE:

The study aimed to evaluate the complications of the MCGR system against the CGR system in our center.

STUDY DESIGN/SETTING:

This is a retrospective case control series.

PATIENT SAMPLE:

The sample includes patients with early-onset scoliosis treated with MCGR or CGR.

OUTCOME MEASURES:

Complications and unplanned return to theater were the outcome measures.

RESULTS:

Of the 37 patients (MCGR, N=10; CGR, N=27) in our cohort, 28 patients (76%) had at least one complication. Taking into account the follow-up period, MCGR had a higher complication rate than CGR group (0.32 complication per patient per year vs. 0.15 complication per patient per year). The use of MCGR was associated with a lower risk of deep infection (odds ratio [OR]: 0.22; p=.22) and superficial infection (OR: 0.07, p=.017) but increased risk of metalwork problems (OR: 4.67; p=.045) and unplanned return to theater (OR: 2.92; p=.05) compared with CGR.

CONCLUSIONS:

Although MCGR has a lower rate of both deep and superficial infections when compared with CGR, it does not completely avoid repeated invasive surgical procedures as previously suggested. It does have a significant increased risk of metalwork problems and unplanned return to theater.

KEYWORDS:

Complications; Deformity; Early-onset scoliosis; Growing rods; Magnet; Remote control; Scoliosis

PMID:
26850175
DOI:
10.1016/j.spinee.2015.12.099
[Indexed for MEDLINE]

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