Declining Rates of Orthopedic Surgery Among Patients With Multiple Myeloma- Associated Skeletal Lesions

Multiple myeloma is a cancer that starts in the bone marrow, the soft tissue inside bones that makes blood cells. In this disease, abnormal cells multiply and crowd out healthy ones, but they also attack the bone itself. They eat away at the bone structure, creating weak spots that can break easily, even from minor movements. These breaks, called pathologic fractures, often cause severe pain and can leave a person unable to walk or move normally. For decades, when these breaks happened, doctors frequently turned to surgery to stabilize the bone, much like setting a broken branch on a tree to keep it from snapping further. However, over the last twenty years, the way doctors treat the cancer itself has changed dramatically. New medicines have become much better at stopping the cancer cells and protecting the bones, leading to a question that researchers wanted to answer: as the cancer gets easier to control with drugs, do patients still need as many operations?

A team of researchers set out to track this change by looking at a massive collection of medical records from the United States. They studied more than ten thousand patients, mostly older men, who were diagnosed with multiple myeloma between 2008 and 2024. The team examined whether these patients underwent any orthopedic surgery—such as fixing a broken bone in the spine, leg, or arm, or replacing a joint—within three years of their diagnosis. They wanted to see if the need for these operations had gone down over time, and if so, whether the patients getting surgery were different from those who did not. The researchers also looked at how factors like the patient's overall health, their age, and how physically weak they were might have influenced the decision to operate.

The results showed a clear and significant drop in the number of surgeries. In the earliest years of the study, from 2008 to 2010, about ten percent of patients needed an orthopedic operation within three years of being diagnosed. By the time the study reached the years 2020 to 2022, that number had fallen to just over four percent. This decline happened across every type of procedure the researchers looked at. Surgeries on the spine, which are often done to relieve pressure on the spinal cord or stabilize a broken back, dropped from five percent to two percent. Surgeries to fix broken bones in the arms or legs fell from six percent to two percent. Even joint replacements, which were sometimes needed when the disease destroyed a hip or shoulder, became much less common, dropping from two percent to less than one percent. The data suggests that as time went on, patients were living longer without needing these invasive procedures.

To understand why this was happening, the researchers looked closely at the patients themselves. They found that the patients diagnosed in the later years were actually in worse physical condition than those diagnosed earlier. They were older on average, and they had more other health problems, such as heart disease or diabetes. They were also more likely to be considered frail, meaning they had less physical strength and reserve to handle stress. Despite being sicker and weaker, these later patients were far less likely to have surgery. This finding is important because it suggests the drop in operations is not because the patients became healthier or younger. Instead, it points to the power of the new cancer treatments and bone-strengthening drugs that became standard care during this period. These medicines appear to be preventing the bone damage from reaching the point where surgery is the only option.

The study also revealed a surprising pattern in how doctors decide who gets an operation. Patients who were very frail and had trouble moving around were actually more likely to have surgery than those who were stronger. This makes sense from a medical standpoint: if a patient is already weak and their bones break, the risk of becoming permanently bedridden is high, so doctors may feel a stronger need to fix the bone to help them walk again. On the other hand, patients who had many other serious medical conditions were less likely to undergo surgery, likely because the risks of the operation itself were too high for their bodies to handle. This shows that doctors are making very careful, individual choices, weighing the need to fix a broken bone against the dangers of the procedure.

The researchers noted that while surgery has become less common, it remains a vital tool for certain patients. When a bone is about to break, or when a fracture is pressing on nerves and causing paralysis, surgery is still necessary to prevent permanent damage. The study does not suggest that surgery is obsolete, but rather that fewer patients are reaching the point where it is the only solution. The decline in operations aligns with the introduction of newer drugs that target the cancer directly and medicines that specifically protect the bones from breaking. While the study could not prove that specific drugs caused the drop in surgery rates, the timing of the decline matches the rollout of these modern therapies.

Ultimately, this research highlights a major shift in how multiple myeloma is managed. The disease is no longer just a condition that inevitably leads to broken bones and emergency operations. Thanks to better systemic treatments, the skeleton is being preserved more effectively, allowing patients to avoid the risks and recovery time associated with major surgery. The findings suggest that the future of care lies in a close partnership between cancer specialists and orthopedic surgeons, ensuring that surgery is reserved for the specific cases where it is truly needed, while relying on advanced medicines to keep the bones strong for everyone else.