What Are the 4 Stages of Osteoarthritis?

Knowing your osteoarthritis stage lets you better manage symptoms

When osteoarthritis makes daily tasks like walking the dog, climbing stairs or opening a jar difficult or painful, there’s treatment that can help.

Osteoarthritis is the most common form of arthritis. It develops when the smooth cartilage or soft tissue that cushions the end of bones gradually wears down. Over time, less cushioning allows bones to rub against each other, causing pain, stiffness and swelling that make movement harder.

Knowing which of the 4 osteoarthritis stages you’re in outlines how severe your condition is and guides treatment. The condition can get worse over time, but early detection and following your treatment plan can slow progression and prevent serious joint damage.

“With the right approach, many people can ease pain and symptoms, slow joint damage and improve their quality of life,” says James Piper, MD, an orthopaedic surgeon at Geisinger.

Osteoarthritis causes and risk factors

Any joint can be affected by this common degenerative joint disease, but the knees, hips, spine, hands and feet are most common.

Osteoarthritis causes and risk factors include:

Age (risk increases as you get older)
Prior joint injuries or surgery
Excess body weight, which puts extra stress on joints
Repetitive stress on a joint
Family history
Bone or joint deformities

“Osteoarthritis typically results from a combination of wear and tear over time, inflammation and repetitive stress on the joints,” says Dr. Piper.

What are the 4 stages of osteoarthritis?

There are 4 stages of osteoarthritis, ranging from early wear and tear to severe joint damage. Clinicians combine your symptom history and activity limits, physical exam and imaging to gauge severity and assign a stage.

“As joint degeneration advances, your pain gradually increases while mobility decreases,” says Dr. Piper. “Understanding where you are in the progression can help you and your provider tailor treatment to better manage your symptoms and maintain quality of life.”

Osteoarthritis stage 1: Early or minor

In osteoarthritis stage 1, joint changes are minimal and symptoms are subtle. You might notice brief stiffness after rest or mild soreness after a long walk or run. Because many people have little or no pain, and X-rays can look normal, stage 1 usually goes undetected.

But if your doctor catches it in this early stage, they’ll typically focus on prevention strategies. They may recommend lifestyle changes like staying active and maintaining a healthy weight.

Healthy habits reduce stress on joints and keep muscles around them strong — no matter what stage you’re in.

Replace high-impact activities with joint-friendly ones, like walking, strength training, biking or swimming. Supportive footwear reduces joint stress, too.

“If you have pain or discomfort, over-the-counter pain relievers like acetaminophen or nonsteroidal anti-inflammatory drugs such as ibuprofen or aspirin can help,” says Dr. Piper. “But talk to your doctor first, especially if you’re using them routinely.”

Osteoarthritis stage 2: Mild

When you reach osteoarthritis stage 2, symptoms become more noticeable. You may feel morning stiffness, intermittent pain when you’re active and mild swelling that can affect your movement. You might avoid or limit some everyday activities, like climbing stairs, kneeling or opening jars, because they’ve become uncomfortable.

Bone spurs and slight cartilage damage may show up on X-rays.

At this stage, treatment aims to reduce pain, preserve function and slow joint changes. Your doctor may recommend physical therapy to strengthen surrounding muscles and improve flexibility and mobility.

Applying heat before activity to ease stiffness — and ice afterward to alleviate soreness — can help. So can supportive devices like knee sleeves or shoe inserts, along with over-the-counter pain relievers.

“With appropriate treatment, many people can maintain good joint function and range of motion to continue daily activities,” says Dr. Piper.

Osteoarthritis stage 3: Moderate

In osteoarthritis stage 3, symptoms are more persistent and start to interfere with daily life. You feel pain from things like walking, standing or climbing stairs — and it may linger afterward. Stiffness lasts longer, too, especially in the morning or after sitting. Swelling happens more often, and you may have less range of motion.

“Fatigue is common because prolonged walking or standing can be difficult,” says Dr. Piper. “So daily routines may need to be adjusted to avoid pain and flare-ups.”

X-rays often show significant deterioration, with the space between joints becoming visibly narrower. Increased bone density and new bone spurs are also visible.

Treatment at this stage likely combines several approaches. Along with earlier-stage treatments, your doctor may recommend occupational therapy for joint protection and strategies to make daily tasks easier. Prescription drugs, as well as corticosteroid or hyaluronic acid injections into the joint, can relieve pain and inflammation.

“Reduced mobility and significant pain and stiffness can increase the risk of falls,” says Dr. Piper. “Work closely with your doctor to manage your condition and risks.”

Osteoarthritis stage 4: Severe

In the most advanced stage, cartilage has become extensively worn — often to the point of bone-on-bone contact. X-rays show severe loss of joint space and prominent bone spurs.

In stage 4, you’ll have nearly constant pain, even when you’re at rest or in bed. Affected joints are extremely stiff and swell often, and they may look enlarged or deformed. It’s common to be unstable, with noticeable loss of motion.

“Daily life can be heavily affected,” says Dr. Piper. “Even walking or standing for a few minutes can be difficult. And reduced activity in work, exercise and socializing can take a toll on your quality of life.”

Treatment for osteoarthritis stage 4 focuses on pain relief and maintaining as much independence as possible. Physical and occupational therapy, assistive devices and medications play a role, but typically aren’t enough to manage symptoms effectively.

When pain and disability are this severe, you might consider joint replacement surgery (knee, hip or shoulder arthroplasty), which can bring pain relief and better mobility. Other procedures, like an osteotomy or joint realignment surgery, may also stabilize the joint.

“Low-dose radiation therapy has emerged in recent years as an effective alternative to delay or even avoid invasive surgery,” says Dr. Piper. “It works by using very small, targeted doses of radiation over several sessions to significantly reduce joint pain and inflammation.”

Talk with your doctor about your options and review procedure risks versus benefits and recovery timelines. Then you can make an informed decision on the next best step.

Tips on how to prevent osteoarthritis

While not all osteoarthritis cases can be prevented, there’s a lot you can do now to lower your risk and support joint health:

Maintain a healthy weight.
Eat an anti-inflammatory diet that includes fruits, vegetables, whole grains, nuts and seeds and avoid ultra-processed foods.
Stay physically active with low-impact aerobic exercise (walking, swimming, yoga, biking) and strength training for joint stability.
Vary your workouts and activity to limit repetitive strain.
Reduce injury risk by warming up before exercise and gentle stretching afterwards.
Always wear supportive, well-fitted footwear.
Address injuries promptly and complete rehabilitation to restore strength and mobility.
Manage stress and prioritize sleep, both of which can influence pain and inflammation.

Dr. Piper says, “Even if you’re in the initial stages of osteoarthritis, establishing healthy habits now can make a big difference in slowing progression and reducing flare-ups to enjoy a better quality of life.”