What's the Best Way to Treat Osteoarthritis Knee Pain?

Osteoarthritis (OA) is one of the most common types of arthritis, and one of the biggest drivers of knee pain generally. Here's what's actually happening in the joint, and what genuinely helps. The mechanics behind osteoarthritis The knee is formed by the bottom of the thigh bone, the top of the shin bone, and the kneecap. Each of these surfaces is lined with a smooth substance called articular cartilage, which allows the bones to move against each other without friction and keeps the joint protected during bending and straightening. Between the thigh and shin bone surfaces sits the meniscus — a piece of tissue acting as a shock absorber, evenly distributing weight across the joint during walking and running, and helping stabilize the knee during rotational movements like pivoting. With osteoarthritis, cartilage gradually wears away and becomes less resilient, placing more stress on the joint and leading to pain and dysfunction. OA can affect anyone, but tends to become more common from the 50s onward — partly because cartilage naturally starts breaking down around this stage of life, and partly because muscles begin weakening too, providing less support for the knee. Being overweight, at any age, adds further stress to the joint and contributes to the condition. Common symptoms - Pain and stiffness, particularly noticeable first thing in the morning or after sitting for a prolonged stretch - Decreased knee mobility - Pain located behind the kneecap, or along the inside or outside of the knee - Swelling - Thinning of the muscles above the knee, from weakening thigh muscles — itself a major contributor to ongoing knee OA pain How to treat osteoarthritis of the knee There's no cure for osteoarthritis, but there's genuinely a lot that can be done to reduce pain and improve function without relying on painkillers. Physiotherapy is a highly effective approach for knee OA — easing pain, reducing stiffness, and improving the knee's ability to handle walking, bending, squatting, sitting, and the rest of daily life. Exercise is the hallmark of a physiotherapy program here: targeted work to improve mobility and strength in the knee, sometimes alongside a broader aerobic program if weight management is part of the picture. Physiotherapists also guide appropriate symptom-control techniques: cold therapy to ease inflammation and swelling, heat therapy to improve circulation to stiff joints and surrounding muscles, and hydrotherapy (aquatic therapy), which uses water's buoyancy to reduce joint stress while still allowing meaningful, gentle exercise. Common active treatments include knee-strengthening exercises to build a more stable, supported joint, and flexibility exercises to restore range of motion that OA tends to gradually take away. Used together, these two categories help take real strain off the knee while managing symptoms directly. In some cases, a physiotherapist may also recommend a custom knee brace to further reduce joint stress. Why exercise doesn't make OA "worse," despite how it might feel A common worry with knee OA is that exercise will accelerate joint wear — understandable, given how counterintuitive it can feel to move a joint that already hurts. In practice, the opposite tends to be true. Appropriately dosed exercise strengthens the muscles supporting the joint, which reduces the load the joint itself has to bear during daily movement. Complete inactivity, by contrast, tends to accelerate the muscle weakening that's already part of the OA picture, compounding the problem rather than protecting against it. This is exactly why a physiotherapist-guided program — one that calibrates intensity appropriately rather than either pushing too hard or avoiding movement altogether — tends to outperform simple rest as a long-term strategy. The bottom line Osteoarthritis knee pain responds well to a combination of targeted exercise, appropriate use of cold and heat, and — where helpful — hydrotherapy or bracing. While the underlying joint changes can't be reversed, a physiotherapy-guided plan can meaningfully reduce pain and restore function, often enough to keep daily activities comfortable without leaning on medication as the primary strategy.