Shoulder pain is one of the most common reasons people visit a doctor for muscle and joint problems. It can make everyday activities such as lifting groceries, reaching overhead, or even sleeping uncomfortable.
Doctors say the shoulder is especially vulnerable because it is the most flexible joint in the body, allowing the arm to move in many directions. This flexibility depends on a group of muscles and tendons called the rotator cuff, which keeps the upper arm bone stable in the shoulder socket while allowing smooth movement.
Problems with the rotator cuff are responsible for most shoulder pain cases. These problems can include tendon wear, inflammation, or tears that develop over time. Because of this, doctors often order imaging tests such as MRI scans to look for damage inside the joint. However, new research suggests that these scans may not always explain why someone is in pain.
A large Finnish study called the Finnish Imaging of Shoulder study examined how common rotator cuff changes are in middle-aged and older adults. The findings were published in JAMA Internal Medicine.
Researchers discovered that nearly everyone over age 40 showed some kind of abnormality in the rotator cuff on MRI scans, even if they had no shoulder pain at all. This means that many changes seen on imaging may simply be part of normal aging rather than a sign of disease.
The study included 602 adults between the ages of 41 and 76 who were randomly selected from a national health database in Finland. This approach allowed researchers to study people from the general population, not just patients already seeking treatment. Participants completed questionnaires describing any shoulder pain or movement problems, and then all underwent MRI scans of both shoulders using high-resolution equipment.
Radiologists examined the images without knowing which participants reported pain. They classified the tendons as normal, worn, partially torn, or fully torn. The results were surprising.
Rotator cuff changes were found in 96 percent of people without shoulder pain and 98 percent of those with pain. This small difference suggests that imaging findings alone cannot explain why some people experience discomfort while others do not.
Researchers say these changes may be similar to wrinkles or gray hair, which become more common with age but are not necessarily signs of illness. The study also found that rotator cuff abnormalities become almost universal after age 40. This raises concerns about relying too heavily on imaging when diagnosing shoulder problems.
In many countries, imaging is often ordered early in the evaluation process. About half of patients receive a scan during their first visit to a general practitioner.
Once an abnormality appears on a scan, it may lead to treatments such as physical therapy, injections, or even surgery. However, if the imaging result is not actually causing the pain, these treatments may not be helpful.
Rotator cuff surgeries have increased dramatically in recent years, and some experts believe that heavy reliance on imaging may be contributing to this trend.
Previous research has already shown that the connection between scan findings and real pain is often unclear. This new study strengthens the argument that doctors should consider symptoms, physical examination, and patient history rather than depending on scans alone.
The researchers emphasize that imaging can still be useful in certain situations, such as when severe injury or other serious conditions are suspected. However, routine scans for mild or moderate shoulder pain may not always provide meaningful answers. Better tools are needed to distinguish between harmless age-related changes and problems that truly require treatment.
This study highlights the importance of a balanced approach to diagnosing shoulder pain. While technology can reveal detailed images of the body, it cannot always explain how a person feels. Doctors and patients should work together to decide the best course of action based on symptoms, lifestyle, and overall health.
Overall, the findings suggest that many people may have shoulder changes visible on scans even if they feel perfectly fine. Understanding this can prevent unnecessary worry and avoid treatments that may not be needed. The research offers an important reminder that aging naturally brings changes to the body, and not all of them are harmful.
If you care about pain, please read studies about vitamin K deficiency linked to hip fractures in old people, and these vitamins could help reduce bone fracture risk.
For more health information, please see recent studies that Krill oil could improve muscle health in older people, and eating yogurt linked to lower frailty in older people.
Copyright © 2026 Knowridge Science Report. All rights reserved.
