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Surgeon Survey Shows No Adverse Events With MRI in Patients With Magnetically Controlled Growing Rods (MCGRs)

Regina P Woon1, Lindsay M Andras1, Hilali Noordeen2

  • 1Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Blvd. Mailstop #69, Los Angeles, CA 90027, USA.

Spine Deformity
|May 9, 2018
PubMed
Abstract

Insights

Magnetic resonance imaging (MRI) is safe after magnetically controlled growing rods (MCGRs) implantation, with no adverse events reported. However, MRI artifact may limit clinical utility in the thoracolumbar spine.

Area of Science:

  • Spinal surgery
  • Pediatric orthopedics
  • Medical imaging

Background:

  • Magnetically controlled growing rods (MCGRs) offer advantages over traditional growing rods but raise concerns regarding MRI compatibility.
  • MRI is frequently indicated for pediatric patients with spinal deformities.

Purpose of the Study:

  • To evaluate the safety and potential adverse events associated with MRI scans in patients with implanted MCGRs.
  • To assess the interpretability of MRI scans in different spinal regions following MCGR implantation.

Main Methods:

  • A survey was distributed to pediatric spine surgeons who utilize MCGR technology.
  • Surgeons reported on their experience with MRI scans in patients who had undergone MCGR implantation.

Main Results:

  • No adverse events (e.g., implant malfunction, heating) were reported in 10 patients undergoing MRI with MCGRs.
  • MCGRs functioned as expected, with appropriate lengthening observed post-MRI.
  • Brain and cervical spine MRIs were interpretable, while thoracic and lumbar spine MRIs showed significant artifact, rendering them uninterpretable.

Conclusions:

  • MRI can be safely performed in patients with MCGRs, with no observed adverse events.
  • While brain and cervical spine imaging is feasible, artifact from MCGRs limits the clinical value of thoracic and thoracolumbar spine MRIs.
Keywords:
Early onset scoliosisMagnetic resonance imagingMagnetically controlled growing rodsSurgeon survey

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