Joint Replacements Trigger Some, But Not All, Airport Security SystemsIncreased airport security has consequences for patients with metal implants. Anyone with a pacemaker is not required to go through a metal detector screening. A pat-down screening will be needed.
Joint replacements may or may not set off the metal detector. In this article, Dr. Ostrum, Chief of the Orthopaedic Trauma Unit at Cooper University Hospital in New Jersey looks at this problem.
One person with a joint replacement may trigger an alarm at one airport that doesn't get triggered at another. The factors that affect metal detection may include:
Today's modern metals are difficult to magnetize and are poor conductors so are difficult to detect. Older implants with higher amounts of iron or other magnetic material are more likely to set off the alarm. Metal plates with more than four screws used to hold the implant in place are more likely to activate the archway.
Anyone with more than one implant is likely to trigger the alarm just based on the amount (mass) present. Implants made of titanium, cobalt, or chrome alloys are also less likely to be detected.
With today's increased airport security, patients can expect to set off security alarms and need to have a pat-down exam. Carrying a card or certificate stating that there is an orthopedic implant does not exempt anyone. Notifying the security staff in advance is not required but is recommended.
Robert F. Ostrum, MD. Airport Detection of Implanted Orthopedic Devices. In The American Journal of Orthopedics. October 2006. Vol. 35. No. 10. Pp. 465-468.
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