Knee Osteoarthritis in Black Adults: Pain, Care, and the Surgery Gap

Osteoarthritis (OA) is the most common form of arthritis, and the knee is the joint it hits hardest. It is not simply the cartilage wearing out with age. OA is a disease of the whole joint: cartilage breaks down, the bone underneath thickens and forms spurs, and the joint lining (the synovium) becomes inflamed. That low-grade inflammation drives much of the pain and helps push the disease forward. For Black adults, the stakes are higher on both ends. The pain and disability tend to be worse, and the treatment that resolves end-stage knee OA, joint replacement, is offered and used far less often.

Cartilage is the smooth surface that lets the ends of bones glide. In OA, that surface frays and thins. But the modern understanding of the disease moved past the old "wear and tear" model years ago. Even in early stages, the synovium inflames and releases inflammatory mediators that speed cartilage breakdown, and the damaged cartilage in turn feeds more inflammation. That loop is why OA pain can flare and why anti-inflammatory treatment helps.

The symptoms follow a recognizable pattern. Pain comes on with activity and eases with rest early on. The knee stiffens after sitting still or first thing in the morning, usually loosening within 30 minutes. As it advances, the joint can swell, grind or click, and feel like it is going to give way. Late-stage knees hurt at rest and at night, and the pain stops responding to the basics. Progression is not uniform. In the Johnston County Osteoarthritis Project, a long-running North Carolina cohort, African American participants showed faster progression of knee OA than white participants (adjusted hazard ratio 1.67), even though they were not more likely to develop it in the first place.

The disparity is not subtle. In national CDC survey data, Black adults with arthritis are roughly 1.8 to 1.9 times as likely as white adults to report severe joint pain, and more likely to report activity limitation and work limitation. Importantly, the higher pain burden among Black adults was not fully explained by differences in income, body weight, depression, or other health conditions. Something beyond those factors is driving it.

Part of that something is how pain gets treated. A widely cited 2016 study found that about half of medical students and residents endorsed at least one false belief about biological differences between Black and white people, such as the idea that Black people have thicker skin or feel less pain. Those who held more false beliefs rated a Black patient's pain as lower and made less accurate treatment recommendations. The takeaway is not that every clinician is biased. It is that under-treatment of Black patients' pain is documented, so the burden of being specific and direct about your pain often falls on you.

Several risk factors converge. Body weight is the biggest modifiable one: women with obesity have close to four times the risk of knee OA, because every pound of load multiplies across the knee with each step, and fat tissue itself produces inflammatory signals. Prior knee injury, including old sports or work injuries, sharply raises later OA risk. So does physically demanding work: jobs with repeated kneeling, squatting, lifting, and standing load the joints for decades. Genetics and joint structure matter too. The metabolic load that drives weight and insulin resistance often travels with knee OA, which is one reason the same households see diabetes, high blood pressure, and joint pain together. Our explainer on belly weight and insulin resistance in Black women covers that metabolic side.

Major guidelines from the American College of Rheumatology and the international OARSI group agree on the foundation, and it is not surgery or injections. The core treatments are education, weight management, and exercise. These come first because they have the strongest evidence and the lowest risk.

Weight management. For anyone carrying extra weight, this is the single highest-yield step. Losing about 10% of body weight, paired with exercise, produces meaningful drops in pain and gains in function, and larger losses help more. This is also where the metabolic picture connects: the same changes that help knee OA help blood sugar and blood pressure.

Strengthening and physical therapy. Strong muscles around the knee, especially the quadriceps and hips, take load off the joint. A physical therapist can build a targeted program and correct movement patterns that aggravate the knee. PT is first-line, not a consolation prize, and it is often the thing Black patients are referred to less and have to ask for by name.

Low-impact exercise. Walking, cycling, and swimming relieve pain and improve function. A systematic review of long-term therapeutic exercise lasting 3 to 30 months found it is safe for most older adults with knee pain, with no signal that it speeds up joint damage or leads to more knee replacements. Moderate physical activity has even been linked to slower cartilage loss in women with knee OA. This is the direct answer to the "exercise will wear it out faster" fear: the evidence runs the other way.

Medication. Topical NSAIDs (gels and creams applied over the knee) are strongly recommended and carry less stomach and kidney risk than pills. Oral NSAIDs work but need a check on blood pressure, kidney function, and stomach risk, which matters because hypertension and kidney disease are more common in Black adults. If you have gout flaring in the same joints, treat that as its own problem; see our guide to gout in Black men.

Injections, honestly. Steroid injections can calm a painful flare for weeks to a few months, but they do not change the disease and repeated shots are not a long-term plan. Hyaluronic acid (gel) injections have weak and inconsistent evidence; guidelines do not strongly recommend them. Platelet-rich plasma and stem-cell injections are marketed heavily and are not guideline-supported. Be skeptical of any clinic selling expensive injection packages as a cure.

Total knee replacement is one of the most effective operations in medicine for the right patient. It is appropriate when the joint damage is advanced, the pain is constant and limits daily life, and the non-surgical steps have been genuinely tried. It is not a first move, and it is not for mild OA.

The gap in who gets it is well documented and stubborn. In a study of older women, Black women were about 30% less likely than white women to undergo knee replacement even after adjusting for arthritis severity, joint pain, mobility, body weight, and other health conditions, and the gap only narrowed modestly after accounting for socioeconomic status. In national Medicare data, the per-capita rate of knee replacement for Black patients ran about 40% below the rate for white patients, and that disparity barely moved over an 18-year span. Black participants in research cohorts often have worse baseline knee pain and function yet a lower chance of getting the surgery. The drivers are mixed: fewer referrals, less time spent discussing surgery, mistrust earned through experience, and patient preferences shaped by all of the above.

How to advocate if your knee OA is advanced and the basics have failed: ask the direct question, "Am I a candidate for joint replacement, and if not, why not?" Ask for a referral to an orthopedic surgeon in writing. Bring a record of what you have already tried (PT, weight loss, NSAIDs, injections) so "have you tried conservative treatment" cannot stall the conversation. If you are told to keep waiting with no clear endpoint, get a second opinion. You are allowed to.

"Just rest it, nothing can be done until surgery." False. Most people with knee OA never need surgery, and the people who do still benefit from weight management and strengthening, which improve surgical outcomes. Resting a painful knee for weeks weakens the muscles that protect it and usually makes things worse. "Exercise will wear it out faster." Also false. Appropriate low-impact and strengthening exercise reduces pain and does not accelerate joint damage. The wrong move is inactivity, not movement.

Start with a clinician who will take your pain seriously and build a real plan: weight support, a physical therapy referral, the right NSAID, and a clear path to an orthopedic surgeon if the knee is advanced. A primary care doctor, a rheumatologist, or an orthopedist can all start this. You can find a Black orthopedist, rheumatologist, or primary care clinician in our directory, including clinicians who focus on caring for Black patients. Walk in with your history of what you have tried, the specific question about joint replacement candidacy, and the expectation of a referral, not a brush-off.