Shoulder Arthritis: Symptoms, Causes, and Treatment Options

If your shoulder aches deep in the joint, grinds when you move it, and slowly loses range over months or years, arthritis may be the reason. Shoulder arthritis is common as we age, but it doesn’t have to take over your life. This guide explains what it is, how to recognize it, and the treatments that help — from simple daily changes to injections and, when needed, surgery.

What is shoulder arthritis?

Arthritis simply means inflammation of a joint. In the shoulder, it usually means the smooth cartilage that caps the ends of the bones has worn thin. That cartilage normally lets the ball glide easily in its socket. As it breaks down, bone rubs closer to bone, which causes pain, stiffness, and the grinding or catching many people notice. Because the shoulder is one of the most mobile joints in the body, even a modest loss of that smooth surface can make everyday reaching feel difficult.

Common types of shoulder arthritis

A few different conditions fall under the same umbrella:

• Osteoarthritis — the “wear and tear” type, most common after middle age.
• Rheumatoid arthritis — an inflammatory disease where the body attacks the joint lining, often affecting both shoulders.
• Post-traumatic arthritis — develops years after a fracture or dislocation.
• Rotator cuff tear arthropathy — arthritis that follows a large, long-standing rotator cuff tear.

Telling these apart matters because the treatment and outlook can differ.

Symptoms of shoulder arthritis

Shoulder arthritis usually comes on gradually. Common signs include:

• Deep, aching pain in the joint, often worse with activity
• Stiffness and a shrinking range of motion — reaching overhead or behind the back gets harder
• A grinding, clicking, or catching feeling when you move the arm
• Pain that can disturb sleep, especially if you lie on that side
• Pain that may be felt in the back of the shoulder and can radiate toward the arm

Night pain is common with several shoulder problems. Our guide on why the shoulder hurts more at night explains why and what helps.

What causes shoulder arthritis?

The biggest factor is simply time — cartilage tends to wear with age and use. Other contributors include a previous shoulder fracture or dislocation, a history of heavy overhead work or sport, a long-standing rotator cuff tear, family history, and inflammatory conditions such as rheumatoid arthritis. Often several of these overlap.

How is shoulder arthritis diagnosed?

Diagnosis starts with your history and a hands-on exam to check how far the shoulder moves, where it hurts, and whether it grinds. X-rays are the key test — they show narrowing of the joint space, bone spurs, and other changes that confirm arthritis. Sometimes an MRI is added to look at the rotator cuff and soft tissues, since a cuff problem can accompany or mimic arthritis. Getting the diagnosis right guides the whole treatment plan.

How is shoulder arthritis treated?

Treatment steps up only as far as it needs to, and most people get meaningful relief without surgery.

Activity changes and self-care

Modifying painful activities, applying heat or ice, and pacing overhead tasks can calm a flare. Losing the “all or nothing” approach — and keeping the joint gently moving — often helps more than complete rest.

Physical therapy

A therapist can teach exercises that preserve range of motion and strengthen the muscles around the shoulder, which takes load off the worn joint. Gentle, consistent movement is one of the most useful long-term tools.

Medications

Over-the-counter anti-inflammatory medicines can ease pain for many people. Inflammatory types of arthritis may need specific medications prescribed by a specialist.

Injections

A corticosteroid injection into the joint can reduce inflammation and provide a window of relief, which can also help you get more out of therapy. Other injection options may be discussed depending on your situation.

When is surgery considered?

Surgery becomes an option when arthritis is advanced and pain limits daily life despite months of non-surgical care. For some patients, arthroscopic clean-up can help earlier-stage arthritis; for advanced joint damage, shoulder surgery including joint replacement is highly effective at relieving pain and restoring function. The right choice depends on the type and severity of arthritis, the condition of the rotator cuff, your age, and your goals. When a rotator cuff tear is also part of the picture, our guide on whether you can heal a torn rotator cuff without surgery may help.

For a plain-language overview of the joint and its conditions, the American Academy of Orthopaedic Surgeons’ patient site OrthoInfo is a reliable resource.

When should you see a doctor?

See an orthopedic specialist if shoulder pain and stiffness have lasted more than a few weeks, are disturbing your sleep, or are making everyday tasks harder. Early evaluation lets you start simple treatments sooner and slow the impact of arthritis. You can learn more about our approach to shoulder pain and what to expect at a visit.

Frequently asked questions

What does shoulder arthritis feel like?

It usually feels like a deep ache inside the joint that is worse with activity, along with stiffness and a shrinking range of motion. Many people also notice grinding or catching when they move the arm, and pain that can disturb sleep.

Can shoulder arthritis be cured?

There’s no cure that regrows lost cartilage, but the pain and stiffness can be managed very effectively. Most people do well for a long time with activity changes, therapy, and injections, and surgery is a reliable option if arthritis becomes advanced.

What is the best treatment for shoulder arthritis?

There’s no single best treatment — care is matched to the type and severity of your arthritis. Most people start with activity changes, physical therapy, and anti-inflammatory medicine, adding an injection if needed, and consider surgery only when those no longer control the pain.

Do I need a shoulder replacement?

Not usually. Replacement is considered only for advanced arthritis that limits daily life despite non-surgical care. When it is needed, modern shoulder replacement is very effective at relieving pain and restoring function.

What exercises help shoulder arthritis?

Gentle range-of-motion and strengthening exercises for the muscles around the shoulder can ease load on the joint and preserve movement. A physical therapist can tailor a safe routine, which matters because the wrong exercises can aggravate an arthritic or torn shoulder.

This article is for general education and is not a substitute for medical advice. Talk with a qualified clinician about your specific symptoms.