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MRI Safety with Orthopedic Implants.

Zachary A Mosher1, Jeffrey R Sawyer1, Derek M Kelly1

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Magnetic Resonance Imaging (MRI) is generally safe for patients with orthopedic implants, as significant implant displacement or heating is rare. Further research is recommended to assess individual risks and benefits.

Keywords:
Implant migrationMagnetic resonance imagingRadiofrequency-induced heatingSafetyTorque

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Biomedical Engineering

Background:

  • Patients with orthopedic implants often require Magnetic Resonance Imaging (MRI) for diagnosis.
  • Concerns exist regarding the safety of MRI in the presence of metallic orthopedic implants.

Purpose of the Study:

  • To review the literature from the past 10 years on MRI use in patients with orthopedic implants.
  • To assess the risks of implant displacement and radiofrequency-induced heating during MRI.

Main Methods:

  • A literature search was conducted to identify relevant studies.
  • Fifteen articles published within the last decade were included in the review.
  • Data on implant displacement and temperature changes were extracted.

Main Results:

  • Significant implant displacement was infrequent across the reviewed studies.
  • Radiofrequency-induced heating generally resulted in temperature increases of less than 1°C.
  • Only two studies specifically addressed pediatric patients.

Conclusions:

  • MRI is considered safe for patients with orthopedic implants due to minimal risks of displacement and heating.
  • A risk-to-benefit analysis is crucial for determining the clinical utility of MRI in these cases.
  • Further research and individual assessment of implant-MRI interactions are warranted.