Shoulder Osteoarthritis

Shoulder osteoarthritis is wear of the cartilage inside the main shoulder joint, where the rounded head of the upper arm bone sits in a shallow socket on the shoulder blade. It is far less common than knee or hip arthritis, yet it can limit reaching, dressing and sleep. This page explains causes, tests, treatment choices and care in turkey.

What is shoulder osteoarthritis?

Doctors also call this problem glenohumeral arthritis, after the two bones that meet at the joint: the humerus (upper arm bone) and the glenoid (the socket on the shoulder blade). In shoulder osteoarthritis the glossy cartilage that covers both surfaces becomes thin and frayed, so bone starts to rub on bone.

The body responds by laying down extra bone. Small spurs, called osteophytes, grow around the rim of the ball, and the joint capsule can tighten. The result is a joint that is smaller in movement, rougher in feel and more easily irritated than it used to be.

Who is affected by shoulder osteoarthritis?

Most people who develop it are over 60, although it can appear in the 40s and 50s, especially after an old injury. The shoulder carries no body weight, so it wears more slowly than the knee. When it does wear, the cause is often a past dislocation, fracture, repeated heavy overhead work or a family tendency.

Men and women are both affected. Many patients tell us the stiffness crept up over years before they sought help, and that they had simply stopped using the arm for certain jobs.

How serious is shoulder osteoarthritis?

It is not dangerous to life, and it does not spread to other organs. It does, however, tend to progress slowly. Pain is usually the main driver of care. Some people settle into a stable, tolerable pattern for years, while others see steadily worsening pain and loss of motion.

Because the course varies so much, treatment is matched to how much the shoulder bothers you, not just to what the scan shows. A very worn-looking X-ray can belong to a person with mild symptoms.

How this page is organised

The sections below move from anatomy and stages to diagnosis, then to non-surgical care, surgical options and what to expect when planning surgery abroad. If you are still gathering information, our shoulder hub lists related problems and procedures, and the free case review is there when you want a specialist opinion.

The shoulder is a ball-and-socket joint held in place by muscle and tendon rather than by deep bony walls. That design gives it the widest range of motion of any joint in the body, and it also explains why small changes in cartilage or tendon health are felt quickly.

What is the normal structure of the shoulder joint?

The ball is the head of the humerus, about the size of a small plum cut in half. It sits against the glenoid, a shallow dish on the shoulder blade (scapula). Both surfaces are covered with articular cartilage about 2 to 4 mm thick, which allows almost frictionless gliding.

A rim of fibrous tissue, the labrum, deepens the socket slightly. A thin capsule wraps the whole joint and holds a little lubricating fluid. The shoulder has a second, separate joint at the top, the acromioclavicular joint, where the collarbone meets the shoulder blade.

What does the rotator cuff do?

Four muscles form the rotator cuff: supraspinatus, infraspinatus, teres minor and subscapularis. Their tendons blend around the ball like a sleeve. They lift and rotate the arm and, just as importantly, press the ball into the socket so it stays centred while you move.

The long head of the biceps tendon also runs through the joint and attaches to the top of the socket. When the cuff is healthy, the ball stays centred. When it is torn or wasted, the ball can drift upwards, which changes both the pattern of arthritis and the surgery that is suitable.

What changes in shoulder osteoarthritis?

Cartilage wears first, often unevenly. In many people the socket wears at the back, so the ball slips slightly backwards and the glenoid becomes tilted or hollowed out. Doctors call this posterior wear, and it affects how an implant must be positioned.

Spurs form below the ball, where they can press on the joint capsule and limit rotation. The capsule thickens and tightens, and the muscles weaken from disuse. Over months to years, worn shoulder cartilage leads to stiffness in outward rotation first, then in lifting and reaching behind the back.

Shoulder osteoarthritis is grouped by the shape of the socket and by the health of the rotator cuff, because those two facts guide the choice of surgery more than any single scan grade. Your surgeon will usually describe both in plain terms when explaining your options.

How is the shape of the socket classified?

The most widely used system is the Walch classification, which looks at how the ball sits in the glenoid on a CT scan. It helps predict how hard it will be to place a socket implant securely, and whether bone needs to be reshaped or built up.

Why does the rotator cuff change the plan?

If the cuff is intact and working, an anatomic design usually works well, because the cuff keeps the ball centred. If the cuff is torn beyond repair or replaced by fat, the same design tends to loosen, so a reverse design is chosen. Our page on rotator cuff tear arthropathy describes that scenario.

Is there a primary and a secondary form?

Primary shoulder osteoarthritis has no clear trigger and is linked to age and shape. Secondary shoulder osteoarthritis follows an injury, instability, surgery or another disease. Secondary cases tend to appear in younger people and may have scarring or missing bone, so planning scans are especially important.

What do early, moderate and advanced stages look like?

Early disease shows slight narrowing of the joint space and small spurs, and symptoms are mild. Moderate disease shows clear narrowing and a flattened ball, with stiffness. Advanced disease shows bone touching bone, a hollowed socket and marked loss of movement. Symptoms matter more than the stage on the image.

Shoulder osteoarthritis is diagnosed from your story, a physical examination and an X-ray, and the diagnosis is usually clear without complex tests. Further imaging is added when surgery is being planned. A good assessment also checks the neck, the rotator cuff and the nerves, because several problems can imitate it.

What will the doctor ask and examine?

Expect questions about pain at night, when it started, past injuries, previous surgery, jobs and hobbies, and which tasks you can no longer do. The doctor will watch you lift the arm, compare both sides, and measure how far you can turn the arm outwards with the elbow by your side.

Loss of passive movement, where the doctor moves the arm for you and it still will not go, points towards joint surface problems rather than weak muscles. Strength tests for each cuff tendon, and a check of the neck, help sort out other sources of pain.

Which imaging is used and why?

A standard series of X-rays usually includes a view from the front and an axillary view taken from below the armpit. The axillary view shows the gap between the ball and socket and whether the ball sits centrally. Many people need nothing more for a diagnosis.

When surgery is being considered, a CT scan with 3D reconstruction maps the bone of the socket, and an MRI or ultrasound checks the cuff. Some surgeons use planning software built from the CT to choose implant size and position before the operation.

Can an injection help diagnose the problem?

Sometimes. A small amount of local anaesthetic placed inside the joint, often under ultrasound guidance, can temporarily relieve pain. If most of your pain disappears for a few hours, the joint itself is probably the source. This is a clue, not a final test, and it is not needed for everyone.

What should you bring to a remote review?

Prepare your X-ray images in digital form, not only the report, along with any CT or MRI discs or downloads. Add a short timeline of symptoms, previous injuries or operations, current medicines, allergies and a list of other health conditions. Our guide to medical record review explains what specialists look for.

Non-surgical care is the first step for nearly everyone with shoulder osteoarthritis, and it helps many people for years. It aims to control pain, protect motion and keep the muscles around the shoulder working. No treatment restores worn cartilage, so success is measured in comfort and function, not in scan changes.

Which activity changes help first?

Start by identifying the movements that provoke pain and finding ways to share the load. Carry items close to the body, avoid prolonged overhead work, and use the other arm for heavy lifting. Do not stop moving altogether, because a shoulder left still becomes stiffer and weaker.

Sleep position matters. A pillow under the arm, or sleeping propped on the unaffected side with the arm supported on a pillow in front, often reduces night pain within a few weeks.

What does physiotherapy involve?

A physiotherapist gives gentle range-of-motion work, especially for outward rotation, and strengthening for the rotator cuff and the muscles that move the shoulder blade. Programmes usually run for 6 to 12 weeks with supervision, followed by a home routine. The aim is a better-balanced shoulder, even if the joint surface does not change.

Heat before stretching, and a cold pack after activity, can make exercise more comfortable. Manual therapy may ease stiffness in the short term, but it works best when paired with exercise.

Which medicines are used?

Paracetamol (acetaminophen) is a reasonable first choice for mild pain. Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen can reduce pain and swelling, but they are not suitable for everyone, particularly people with kidney, stomach or heart problems. Topical NSAID gels are an option with fewer body-wide effects.

Stronger painkillers may be used briefly under medical supervision. Long-term opioids are generally avoided, since they carry risks and give limited benefit for joint pain. Ask your doctor or pharmacist about interactions with your other medicines.

Do injections work?

A corticosteroid injection into the joint can reduce pain for several weeks to a few months in some people. It is usually limited to 2 or 3 injections a year, since repeated steroids may weaken tissue and may complicate later surgery if given close to the operation date.

Hyaluronic acid and platelet-rich plasma are used by some clinics, but evidence in the shoulder is weaker than in the knee. Ask what outcome to expect and how it will be measured before agreeing to paying for a course.

What does the evidence suggest?

Studies suggest exercise and education are helpful for most forms of osteoarthritis, and guidelines for joint arthritis recommend them as the foundation of care. Evidence for the shoulder specifically is thinner than for the knee, so treatment relies on your response. If you are not improving after about 3 to 6 months, it is time to discuss next steps.

When non-surgical care no longer controls pain, several operations can treat shoulder osteoarthritis, and the choice depends mainly on age, bone shape, rotator cuff health and activity goals. Joint replacement is the most reliable option for advanced disease, while keyhole procedures are limited to selected people.

Is keyhole surgery useful?

Arthroscopy (keyhole surgery) can clean out loose fragments, release a tight capsule or remove spurs. It is considered mainly in younger patients with early or mild changes who wish to delay replacement. Results are less predictable in advanced disease, and pain relief may last only a few years. See shoulder arthroscopy for the technique.

What is a total shoulder replacement?

In total shoulder replacement, the damaged ball is replaced with a metal head and the socket is resurfaced with a plastic cup. It needs a healthy rotator cuff. Pain relief is usually good, and most implants last many years, although exact survival depends on age, activity and bone quality. You can read the local pathway on our turkey page.

What is a reverse shoulder replacement?

In reverse shoulder replacement, the positions of ball and socket are switched, so the deltoid muscle can lift the arm when the cuff cannot. It suits arthritis with a damaged cuff, severe socket bone loss or a failed earlier operation. Many surgeons also use it in older people with stiff, arthritic shoulders. Details for care in turkey are on the reverse replacement turkey page.

When is a partial replacement considered?

A partial shoulder replacement, also called hemiarthroplasty, replaces only the ball and leaves the natural socket. It can suit selected younger patients with a socket in good condition, but pain can persist if the socket is worn. Many surgeons now prefer a full replacement for osteoarthritis. See the partial replacement turkey page.

How do the options compare?

Cost guides are available for each approach, including total shoulder replacement, reverse shoulder replacement and partial shoulder replacement.

Shoulder osteoarthritis cannot always be prevented, since age and joint shape play a major role, but you can lower your risk and slow its progress. Sensible habits protect the cartilage and keep the muscles that steer the joint strong and balanced.

What can reduce the risk?

• Treat shoulder injuries properly, including dislocations and fractures, and complete rehabilitation instead of stopping when pain eases.
• Use good technique and rest breaks in repetitive overhead work or lifting.
• Keep your rotator cuff and shoulder blade muscles strong with regular exercise 2 to 3 times a week.
• Maintain a healthy weight and general fitness, which support joint health and overall inflammation control.
• Do not smoke, which affects healing and tissue health.

Can you slow progression once it starts?

Staying active, avoiding repeated overload and keeping the shoulder moving through its full comfortable range help preserve function. People who stay consistent with exercise often report fewer flare-ups. Early advice from a physiotherapist is worth having, even when symptoms are mild.

What cannot be prevented?

Genetics, natural socket shape and age-related changes are outside your control. Past injuries that already damaged cartilage may lead to arthritis years later regardless of effort. This is not a failure on your part, and early recognition of symptoms still allows effective treatment.

How do you protect the other shoulder?

When one shoulder is arthritic, the other takes extra load. Avoid overusing the better arm, spread tasks evenly, and report new pain early. Related conditions such as shoulder impingement can appear in the compensating arm when it is overworked.

The outlook for shoulder osteoarthritis is good for most people, because pain can be controlled in a large majority with the right treatment at the right time. The condition tends to progress slowly, and replacement offers dependable relief when non-surgical care is no longer enough.

What is the natural course?

Without surgery, symptoms often wax and wane. Some people stay stable for years, while others gradually lose motion and sleep. Progression is not predictable from the X-ray alone, which is why treatment follows symptoms. Regular exercise and activity changes help many people live comfortably with the condition.

What is recovery after replacement like?

Timelines vary with the type of replacement, your health and how closely you follow rehabilitation. Your surgeon will give you specific restrictions.

What about return to work and sport?

Desk workers often return within 4 to 6 weeks. People with physical jobs may need 3 to 6 months, and some are advised to avoid heavy lifting permanently. Low-impact activities such as swimming, golf, cycling and gentle gym work are usually possible. Contact sport and heavy overhead lifting are generally discouraged.

How long do shoulder replacements last?

Many implants function well for 10 to 20 years, and a large share last longer, but results depend on design, bone quality, activity level and the health of the rotator cuff. Younger, active patients have a higher chance of needing revision at some point. Regular check-ups help detect wear early.

What should you expect in the long term?

Most people report much less pain and better function, with sleep improving first. Movement does not usually return to the level of a healthy 20-year-old shoulder. Realistic expectations, good rehabilitation and follow-up give the best chance of a satisfied outcome.