Will Your New Knee or Hip Set Off Metal Detectors? What You Need to Know
By Dr. Nathan Cafferky, Orthopedic Surgeon at The Steadman Clinic
For many patients, joint replacement surgery is a life-changing step toward an active, pain-free future. But once the new knee or hip is in place, practical questions often arise, especially about travel. One of the most common concerns I hear is, “Will my implant set off airport security?”
The short answer: it’s possible, but not always. Let’s break down what you need to know about metal detectors, joint replacements, and how to prepare for smooth travels.
Why Metal Detectors React Differently
Joint implants are typically made of strong, biocompatible metals such as titanium, cobalt-chromium, or stainless steel. These materials give the implant the strength it needs to last through years of activity.
“Because implants contain metal, they can sometimes trigger airport security scanners,” explains Dr. Nathan Cafferky, joint replacement specialist at The Steadman Clinic. “However, advances in both implant design and security technology mean that not every implant will set off an alarm.”
This is why some patients breeze through security without an issue, while others may experience extra screening. The sensitivity of the metal detector and the exact size and placement of your implant both play a role.
Knee Replacement and Airport Security
A common question patients ask me is whether a knee replacement metal detector alert is inevitable. The reality is that it varies. Smaller implants or newer scanners may not register your implant at all. But in many cases, the security system will detect it.
“If your knee replacement sets off an alarm, don’t panic,” reassures Dr. Cafferky. “TSA agents are accustomed to working with travelers who have implants. A simple explanation and secondary screening are usually all that’s required.”
To make the process easier, I recommend giving yourself extra time at the airport and letting security officers know you have a knee replacement before you walk through.
Hip Replacements and Travel
Patients also often ask, “Do hip replacements set off airport security?” The answer is similar: sometimes yes, sometimes no. Because hip implants are larger than knee implants, they’re slightly more likely to trigger a scanner.
“Most of my patients with hip replacements travel frequently without major issues,” says Dr. Cafferky. “But I always advise them to be prepared for a pat-down or a handheld wand scan, just in case.”
Understanding how hip replacement and metal detectors interact can help take the stress out of flying. The key is to expect the possibility of an alarm and to know that it’s a normal part of the process.
Tips for Traveling with a Joint Replacement
Here are a few strategies to make airport security smoother:
Communicate early. Let TSA staff know you have a joint replacement before entering the scanner.
Plan extra time. Arrive early so that any additional screening doesn’t add unnecessary stress.
Stay calm and confident. Remember, millions of travelers with implants fly safely every year.
Final Thoughts
Having a joint replacement shouldn’t stop you from enjoying travel and adventure. Whether it’s a knee replacement metal detector alert or the question of “do hip replacements set off airport security?” the key is preparation and perspective.
“As surgeons, our goal is not only to help patients walk and move without pain but also to empower them to live fully,” says Dr. Cafferky. “If that means getting through security a little differently, it’s a small tradeoff for the freedom that comes with a new joint.”
So next time you’re packing for a trip, know that while your hip replacement and metal detectors might meet, it’s just a minor part of your journey. With the right mindset, your new joint will carry you farther than any scanner ever could.
