The Power of Movement: Rethinking Osteoarthritis Treatment
Stiff knees, sore hips, and persistent joint pain are often brushed off as normal signs of aging. But osteoarthritis (OA), the most common joint disease worldwide, is not being treated in line with what research actually shows. Experts say the biggest gap isn’t a lack of options, but a failure to utilize the most effective one: movement.
The Underutilized Power of Exercise
Exercise is widely recognized as one of the most effective treatments for long-term joint conditions such as osteoarthritis 1. Even so, studies reveal a concerning pattern: fewer than half of people diagnosed with osteoarthritis are referred to exercise programs or physical therapy by their primary care provider 2. Over 60 percent receive treatments that clinical guidelines do not recommend, and approximately 40 percent are referred to a surgeon before non-surgical options have been adequately explored.
Why Exercise Protects Your Joints
Osteoarthritis affects more than 595 million people globally 2, and a major analysis estimates that this number could approach one billion by 2050 2. Factors contributing to this increase include longer lifespans, more sedentary habits, and rising rates of overweight and obesity.
Regular physical activity does more than ease symptoms; it can biologically and physically lower the risk of developing osteoarthritis and reduce its severity. Cartilage, the smooth tissue that cushions the ends of bones, doesn’t have its own blood supply and relies on movement to stay healthy.
When you walk or put weight on a joint, cartilage is gently compressed, pushing fluid out. When the pressure is released, it draws fluid back in, bringing nutrients and natural lubricants with it. Each step helps nourish and maintain the joint. This understanding reframes osteoarthritis not as simple “wear and tear,” but as a process of breakdown and repair where regular movement supports healing and maintains joint health.
Osteoarthritis: A Whole-Joint Disease
Osteoarthritis doesn’t affect cartilage alone; it involves the entire joint, including joint fluid, underlying bone, ligaments, surrounding muscles, and even the nerves that control movement 2. Targeted exercise addresses many of these components simultaneously. Muscle weakness is an early warning sign, and resistance training can help reverse it. Strong evidence shows that weak muscles increase the risk of both developing osteoarthritis and experiencing faster progression.
Specialized Exercise Programs
Neuromuscular exercise programs, such as GLA:D® (Good Life with osteoArthritis: Denmark), are specifically designed for people with hip and knee osteoarthritis. These programs, typically offered in supervised group sessions led by physical therapists, focus on improving movement quality, balance, and strength to enhance joint stability and rebuild confidence in movement. Participants have reported meaningful reductions in pain, better joint function, and improved quality of life lasting up to 12 months after completing the program.
Beyond the Joints: Systemic Benefits of Exercise
Exercise benefits the entire body, with proven advantages across more than 26 chronic diseases. In osteoarthritis, its impact extends beyond strengthening muscles and supporting cartilage. It also addresses inflammation, metabolic changes, and hormonal shifts that contribute to the disease.
Inflammation, Obesity, and Joint Damage
Obesity is a major risk factor for osteoarthritis, not just due to added stress on the joints, but also because excess body fat is linked to higher levels of inflammatory molecules in the bloodstream and joint tissues. These substances can damage cartilage and speed up disease progression. Regular physical activity helps counter these effects at a molecular level, lowering inflammatory markers, reducing cell damage, and even influencing gene expression in ways that support joint health.
Exercise Before Considering Surgery
Currently, there are no medications that can change the underlying course of osteoarthritis 1. Joint replacement surgery can be transformative, but it’s a major procedure and doesn’t work equally well for everyone. Exercise should be the first step and remain part of care at every stage of the disease. It carries far fewer risks than surgery and provides broad health benefits.
Osteoarthritis isn’t simply about “worn out” joints. It’s shaped by muscle strength, inflammation, metabolism, and lifestyle factors. Regular, structured exercise addresses many of these drivers simultaneously, helping protect cartilage, support the entire joint, and improve overall health. Before turning to surgery, movement remains one of the most effective treatments available.