Surgeons Left 3 cm of a 40-Year-Old Umbrella Rod in Her Foot, and She Went On to Walk 6 Miles Pain-Free

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Over the next two years, the woman recovered fully and could walk up to 10 kilometers, a little more than 6 miles, without complications. Her case, described by family medicine and orthopedic doctors at the Local Health Unit of Alto Minho in Viana do Castelo, was published on Sept. 2, 2025, in the peer-reviewed journal Cureus.

The report describes one patient and does not suggest buried objects commonly cause foot pain. But it raises two questions most people never consider: what happens to metal that sits inside the body for decades, and when doctors decide it is safer to leave some of it alone.

The woman, who had no significant medical history, went to an urgent consultation with several days of acute pain in the front part of her right sole. She denied any injury or strenuous effort. On exam, doctors felt a firm, tender, well-defined, hardened area in the sole, with no redness, drainage, or signs of wider illness.

Suspecting a problem with the plantar fascia, the thick band of tissue along the bottom of the foot, the care team ordered an ultrasound and an X-ray. The ultrasound showed a straight, bright metallic object about 6.5 centimeters long, lying at an angle at the base of the second metatarsal bone. At its far end sat a foreign-body granuloma, a pocket of inflamed tissue the body builds around something it cannot clear.

When asked about the finding, the woman remembered being injured by an umbrella rod more than 40 years earlier. A traditional healer had supposedly removed the object, and she never saw a doctor, so she had no idea a piece remained.

Metal objects are usually easy to spot on standard X-rays because of their density, according to a StatPearls review on wound foreign body removal from the National Library of Medicine. Here, no one had looked for four decades.

In the operating room, the orthopedic surgeon used live X-ray imaging to find the rod and extracted it through an incision in the sole. The metal was extensively corroded, and the surrounding soft tissue showed metallosis.

Metallosis is a reaction to metal debris in the body’s tissues, often marked by dark staining. Doctors most often discuss it in people with joint replacements. The U.S. Food and Drug Administration warns that particles from metal-on-metal hip implants may cause a reaction around the joint that leads to deterioration of nearby tissue.

The Cureus authors drew on that joint-replacement research to explain what they saw. They noted that metallosis can cause local pain and inflammation, in severe cases tissue death, and potentially toxic effects throughout the body. They reported no such systemic problems in this patient and described no laboratory analysis of the removed tissue.

Why did trouble surface after 40 quiet years? The authors suggested that long-retained objects can stay silent until the material degrades through corrosion or the immune response shifts. They also wondered whether the rod splitting into two pieces on its own might have triggered the pain, but said they could not clearly identify the cause. Those are hypotheses, not conclusions the case can prove.

The rod had already broken into two parts, so only one segment came out through the first incision. They then tried a second incision in the midfoot, near the joint where the second metatarsal meets the tarsal bones, to reach the deeper piece. It failed. The remaining fragment, about 3 centimeters long, sat in a spot in the metatarsal region where it could not be removed without risking damage to surrounding structures, so the team left it in place.

That choice fits broader clinical thinking. The StatPearls review notes that exploration can be stopped when continuing would do more harm, that patients can usually be watched safely afterward, and that delayed removal remains an option if a complication develops.

Doctors told the woman about the fragment and its possible risks, including discomfort, infection, chronic inflammation, and loss of function. They discussed another attempt at surgery versus careful monitoring and stressed the importance of follow-up. She also received preventive antibiotics, had her tetanus immunization updated, and kept weight off the foot for two weeks before gradually putting weight on it again.

Recovery was uneventful. Her wound healed, her symptoms resolved, and she walked up to 10 kilometers without complications throughout two years of follow-up.

The authors wrote that the case “underscores the extraordinary capacity of the human body to tolerate retained foreign materials for prolonged periods.” They cited earlier research indicating that such objects are usually removed anywhere from the day of injury to 20 years later, calling a four-decade delay in detection and symptoms rare. Still, they cautioned that no one can predict whether the remaining fragment will cause problems in the future.

For clinicians, the authors’ takeaway is to keep a forgotten object in mind when a patient has unexplained, localized pain, even if the injury happened decades earlier. For everyone else, the case is a reminder that puncture wounds to the foot deserve medical attention. The American Podiatric Medical Association warns that puncture wounds can lead to infection and advises anyone with a foot injury that breaks the skin to see a podiatrist. The CDC’s tetanus guidance lists deep puncture wounds, such as stepping on a nail, among the wounds that warrant a call to a health care provider.

Anyone with new, persistent pain or a lump at the site of an old puncture wound should see a clinician.

Why did surgeons leave part of the umbrella rod inside her foot? The rod had broken into two pieces. The deeper 3-centimeter segment sat in the metatarsal region, and removing it risked damaging surrounding structures, so the team left it and recommended follow-up.

What is metallosis? It is a reaction to metal debris in body tissues, often seen as dark staining. It is best known as a complication of some joint replacements and can cause local pain, inflammation, and tissue damage.

Is the remaining metal dangerous? She had no complications over two years of follow-up, but her doctors said future problems such as pain, infection, or chronic inflammation cannot be ruled out. They stressed the need for ongoing medical follow-up.

How could an object stay in the body for more than 40 years without symptoms? The body can wall off foreign material. The authors suggested symptoms may appear only when the material breaks down or the immune response changes, and they also raised the possibility that the rod splitting in two played a role. These remain hypotheses.

Is a hidden object a common cause of foot pain? No. This is a single, unusual case report. Most foot pain has other causes, and research cited by the authors suggests only about 2% of retained objects ever need to be removed later.

What should someone do after a puncture wound to the foot? Get it checked, especially if it is deep or something may have broken off inside. Make sure your tetanus vaccination is up to date, and see a clinician if pain, swelling, or a lump develops later.