Osteoarthritis is treated with a combination of approaches, not a single fix. The most effective strategies layer together weight management, regular movement, pain relief options, and sometimes injections or surgery. Which combination works best depends on which joints are affected, how far the condition has progressed, and how much it limits your daily life.
Exercise and Physical Therapy
Regular movement is one of the most consistently effective treatments for osteoarthritis, even though it feels counterintuitive when your joints hurt. Exercise works partly through a direct mechanical effect: when you move a joint through its range of motion, the cartilage absorbs and releases synovial fluid like a sponge. Research shows that 12 weeks of quadriceps exercises increases the molecular weight of a key lubricating compound in knee joint fluid, improving its viscosity. In practical terms, this means the joint glides more smoothly and with less friction. Isometric exercises (holding a muscle contraction without moving the joint) can produce this effect even for people who find full-range movement painful.
The best exercises for osteoarthritis fall into three categories. Strengthening exercises build the muscles around the joint so they absorb more of the load during walking, climbing stairs, and standing up. Low-impact aerobic activity like swimming, cycling, or walking reduces overall inflammation and improves cardiovascular fitness. Flexibility and range-of-motion work keeps joints from stiffening further. A physical therapist can design a program that accounts for your specific limitations and progresses safely. Most people notice meaningful improvement within six to eight weeks of consistent exercise.
Weight Management
Carrying extra weight accelerates cartilage breakdown, particularly in the knees and hips. The math is striking: for every pound of body weight you lose, your knee experiences roughly four pounds less force with each step. Lose 10 pounds and you’ve taken about 40 pounds of pressure off your knees during every step of your daily routine, thousands of times per day. This is one of the few interventions that both reduces symptoms and slows the structural progression of the disease. Even modest weight loss of 5% to 10% of body weight often produces noticeable pain relief.
Topical and Oral Pain Medications
Anti-inflammatory medications are the most common pharmacological treatment. What many people don’t realize is that topical versions (gels and creams applied directly to the skin over the joint) provide essentially the same pain relief as pills. A meta-analysis across eight clinical trials found no statistically significant difference in pain reduction between the two forms. The advantage of topical application is safety: oral anti-inflammatories cause significantly more gastrointestinal damage, including stomach irritation and ulcers. Topical versions trade that risk for a higher chance of local skin irritation, which is generally milder and easier to manage.
For people with osteoarthritis in superficial joints like the knee or hand, topical anti-inflammatories are typically the better first choice. For deeper joints like the hip, where a cream can’t penetrate effectively, oral medications may be necessary. Acetaminophen provides a milder alternative for people who can’t tolerate anti-inflammatories, though it addresses pain without reducing inflammation.
When standard pain medications aren’t enough, certain antidepressant medications can help by changing how your nervous system processes pain signals. One such medication, duloxetine, works by increasing levels of two brain chemicals (serotonin and norepinephrine) that help regulate pain perception. It’s typically started at a low dose and increased over one to two weeks. This approach is most useful for people whose pain has become chronic and whose nervous system has become sensitized, amplifying pain signals beyond what the joint damage alone would cause.
Joint Injections
When topical or oral medications aren’t providing enough relief, injections directly into the joint offer another layer of treatment.
Corticosteroid injections deliver a powerful anti-inflammatory directly to the problem area. They work well for acute flare-ups and can provide weeks to months of relief, but they aren’t something you can repeat indefinitely. Repeated corticosteroid injections may accelerate cartilage loss over time, so most providers limit them to a few per year in any given joint.
Hyaluronic acid injections supplement the joint’s natural lubricating fluid. They’re typically given as a series of weekly injections over three to five weeks. Clinical trials comparing the two injection types show similar improvements in pain and function at both three and six months. The choice between them often comes down to whether you’re dealing with an inflammatory flare (favoring corticosteroids) or looking for a longer-duration option without the cartilage concerns of repeated steroid use.
Platelet-Rich Plasma (PRP)
PRP injections use a concentrated preparation of your own blood’s healing factors. The evidence here is more encouraging than for some other biologic treatments. A meta-analysis of randomized trials found that PRP generally outperformed saline injections for pain and function, especially in longer-term follow-up. It also appears to outperform hyaluronic acid in most studies, with benefits lasting six to 12 months. Clinicians who use PRP report a 60% to 70% success rate, defining success as at least a 50% improvement in pain and function lasting six months or more.
Bone marrow concentrate injections, a more expensive alternative, have not shown advantages over PRP in trials following patients up to 24 months. Despite hopes that these treatments might regrow cartilage, no definitive human studies have demonstrated actual cartilage regeneration. PRP is best thought of as a pain management tool, not a cure.
Braces and Assistive Devices
Unloader braces shift weight away from the damaged side of a knee joint and onto healthier tissue. In a randomized controlled trial, patients using an unloader brace saw their knee function scores improve from about 65 to 84 out of 100, compared to 65 to 75 in the control group. Activity-related function and sports participation scores nearly doubled. These braces work best for osteoarthritis that primarily affects one side of the knee (medial or lateral compartment disease).
Simpler aids matter too. Supportive shoes with cushioned soles reduce impact forces. A cane used in the opposite hand from an affected knee or hip can reduce joint loading by up to 20%. Ergonomic tools like jar openers, built-up grip handles, and raised toilet seats reduce stress on hand and hip joints during routine activities.
Supplements: What the Evidence Shows
Glucosamine and chondroitin are the most popular supplements for osteoarthritis, but the evidence is less encouraging than marketing suggests. The American College of Rheumatology conditionally recommends against using glucosamine for knee osteoarthritis. A network meta-analysis found that the classic glucosamine-chondroitin combination does not produce clinically meaningful pain reduction in mild-to-moderate knee osteoarthritis.
Some combination formulas show more promise. Glucosamine paired with omega-3 fatty acids was the only combination that demonstrated a large, clinically meaningful effect on long-term pain reduction, and it also had the lowest odds of side effects among all treatments analyzed. Glucosamine combined with MSM (a sulfur compound) showed moderate short-term benefits. If you want to try a supplement, a glucosamine-omega-3 combination has the strongest current evidence behind it, though the overall quality of that evidence remains moderate.
Surgery
Joint replacement becomes an option when other treatments no longer provide adequate relief and the joint damage is severe enough to significantly limit daily life. Modern knee and hip replacements last 15 to 20 years for most people, with over 90% of patients reporting substantial pain relief. Recovery typically involves several weeks of limited mobility followed by months of physical therapy, with most people returning to normal activities within three to six months.
Partial joint replacements, which resurface only the damaged compartment, offer faster recovery and a more natural-feeling joint for people whose damage is localized. Arthroscopic surgery (cleaning out loose cartilage fragments or bone spurs) has largely fallen out of favor for osteoarthritis after multiple trials showed it performs no better than sham surgery for most patients. The exception is when a specific mechanical problem, like a loose body or a torn meniscus, is causing locking or catching in the joint.