Shoulder Osteoarthritis (Omarthrosis) & Cartilage Damage in the Shoulder: Modern Treatment of Shoulder Osteoarthritis

Cartilage damage refers to structural damage to the cartilage tissue that covers the articular surface of a joint. In the shoulder region, this primarily affects the articular cartilage or glenoid cavity as well as the humeral head.

The articular cartilage ensures low-friction movement and protects the bony parts of the joint from direct stress. If this protective layer is damaged, friction within the joint increases, which promotes inflammatory reactions in the synovial fluid, pain, and progressive joint wear. Without timely treatment, this can gradually lead to osteoarthritis, specifically shoulder osteoarthritis (omarthrosis).

Such damage is often initially noticeable only during physical activity. However, as the condition progresses, symptoms worsen and may persist even at rest.

• Pain in the shoulder joint, initially related to activity
• limited range of motion
• Loss of strength in the arm
• Cracking or grinding in the joint
• Swelling caused by inflammatory processes
• Feeling of stiffness
• Progressive stiffness (frozen shoulder)
• Limited shoulder function

Over time, severe osteoarthritis of the shoulder joint may develop, making everyday movements significantly more difficult.

The causes of cartilage damage in the shoulder are usually not clearly identifiable; the condition typically results from the interaction of several contributing factors.

It often arises in everyday life due to micro-injuries that you may not even notice—for example, from minor accidents or shoulder contusions. Cartilage damage can also result from strength training. Sports that place heavy strain on the shoulder are among the most common triggers. Rotator cuff injuries, anatomical narrowings under the acromion, or previous surgeries also significantly increase the risk.

Furthermore, being severely overweight and advanced age are risk factors (= age-related wear and tear). People who work in jobs that require heavy lifting and carrying are also affected. Constant mechanical stress on the bones and joints leads to cartilage damage over time. Misalignments of the shoulder girdle, insufficient muscle strength, or a genetic predisposition can also contribute to the development of the condition.

Diagnosis and treatment are typically performed by specialists in orthopedics and trauma surgery. A detailed interview regarding the nature, duration, and intensity of the symptoms is followed by a physical examination of the shoulder joint.

Imaging techniques are used for further evaluation. An X-ray allows for the assessment of bony changes and misalignments, while an MRI provides detailed information about the condition of the cartilage, tendons, ligaments, and soft tissues. In unclear cases or for precise staging, an arthroscopy (joint endoscopy) may also be performed, allowing direct visualization of the joint surfaces.

If your doctor diagnoses cartilage damage, it can be clinically classified into four severity levels:

• Stage 1: Softening and superficial roughening of the cartilage tissue; the joint surface is still largely intact.
• Stage 2: Superficial tears and initial structural changes in the articular cartilage.
• Stage 3: Deep tears extending into the lower layers of cartilage, with a significant impairment of the joint’s load-bearing capacity.
• Stage 4: Complete loss of cartilage with exposed bone, often associated with a high risk of developing osteoarthritis.

The choice of treatment depends on the stage of the disease, the extent of cartilage damage, the patient’s age, and their individual daily needs

For mild to moderate cases, conservative therapy is the initial goal. It combines medication for pain and inflammation with hyaluronic acid injections, targeted physical therapy, and complementary manual therapy.

The goal of these measures is to specifically relieve pain, reduce inflammation, and maintain joint mobility. As a result, many patients can remain virtually pain-free for a long time. This type of therapy is one of the most important conservative measures for slowing the progression of the disease.

Physical therapy helps maintain or improve mobility in the shoulder joint @ Studio Romantic / AdobeStock

Infiltration is also becoming increasingly popular. During an infiltration procedure, bioactive substances are injected into the shoulder.

If conservative measures are no longer sufficient or the defect is already more advanced, surgical treatment may be necessary. These procedures are often performed arthroscopically.

Common procedures include microfracturing, cartilage transplantation, and autologous cartilage transplantation. In this process, the patient’s own cartilage cells are harvested, processed, and implanted into the damaged area. Stem cells may be used as an adjunct to stimulate regeneration. The newly formed tissue usually consists of resilient fibrocartilage. These procedures are particularly suitable for younger patients with localized damage.

In cases of severely advanced joint wear or pronounced shoulder osteoarthritis, the only remaining option is often the implantation of an artificial shoulder joint. In this surgical procedure, performed by a shoulder specialist, the damaged portions of the glenoid cavity and the humeral head are replaced, which significantly reduces pain and often restores mobility. 

The wear and tear of the cartilage and the cells themselves cannot be completely cured. However, it can be significantly delayed or halted if detected early. With appropriate treatment, the condition of the cartilage improves considerably.

Existing pain can often be completely alleviated, and full range of motion can be restored. The sooner you consult an orthopedic specialist or a shoulder surgeon, the better the results of medical treatment will be.

If, on the other hand, you ignore your shoulder pain, there is a risk of developing osteoarthritis later on. Targeted muscle training for the shoulder and neck is helpful for a good prognosis.

This includes light strength exercises as well as stretching the pectoral muscles to center the shoulder joint. This requires a great deal of discipline over the long term to prevent the condition from progressing further.

The goal is to maintain shoulder mobility, reduce pain, stabilize joint function, and preserve independence in activities of daily living for as long as possible—even in advanced stages—while delaying shoulder stiffness for as long as possible. Without treatment, however, osteoarthritis continues to progress in many cases.

Cartilage damage in the shoulder is a serious but highly treatable condition. Thanks to modern approaches to the treatment of shoulder osteoarthritis, effective conservative and surgical procedures are now available to limit functional limitations and improve quality of life in the long term.