MRI has little effect on metallic orthopedic implants in general. You may receive a specific information card with your implant or device, which you should bring to your visit and display to the technologist. Certain implants are incompatible with MRI scanners. These include metal pins, plates, and wires used to repair fractures. If you have any questions about whether an MRI is safe for you or not, discuss them with your doctor. They will be able to help you decide what kind of imaging test makes the most sense for you given your condition and what kind of risks are involved with each procedure.