Shoulder Osteoarthritis

The shoulder is a complex joint built for movement rather than stability. It relies on a combination of bones, muscles, tendons, and cartilage to function smoothly.

The humeral head (the ball) fits into the shallow socket of the scapula called the glenoid. A layer of articular cartilage covers both surfaces, allowing the ball to glide easily within the socket.

The shoulder is stabilized by the rotator cuff muscles and tendons, which hold the ball centered in the socket and coordinate motion. When cartilage wears down, friction increases, leading to inflammation, stiffness, and the formation of bone spurs (osteophytes). These changes can further limit movement and cause grinding or clicking sensations known as crepitus.

Shoulder osteoarthritis becomes more common with age and is frequently seen in people over 50. However, it can also occur earlier due to previous shoulder injuries, dislocations, or rotator cuff tears that alter the normal mechanics of the joint.

Certain groups are at higher risk, including:

• Individuals with a history of repetitive overhead activity, such as construction workers, painters, and athletes.
• Patients who have sustained shoulder fractures or instability.
• Those with a family history of osteoarthritis or inflammatory joint disease.

According to orthopedic research, up to 20% of people over 60 show evidence of shoulder arthritis on X-ray, though not all experience significant pain or disability.

Diagnosis starts with a careful history and physical examination. Dr. José Vega, Cleveland’s trusted shoulder specialist, will ask about the nature of your pain, how long it has been present, and which activities make it worse. During the exam, he will assess range of motion, strength, and any grinding or clicking that occurs when the shoulder moves.

Imaging tests are important for confirming the diagnosis:

• X-rays can reveal joint space narrowing, bone spurs, and changes in bone shape.
• CT scans may be used to evaluate bone loss or plan surgery.
• MRI can assess the cartilage, rotator cuff tendons, and surrounding soft tissues.

It’s also important to distinguish osteoarthritis from other causes of shoulder pain, such as rotator cuff tears, bursitis, or frozen shoulder.

Treatment for shoulder osteoarthritis depends on symptom severity, activity level, and how much the condition affects daily life. In many cases, non-surgical treatments can successfully reduce pain and improve function.

Nonsurgical options include:

• Activity modification: Avoiding repetitive or heavy overhead movements.
• Medications: Over-the-counter pain relievers or anti-inflammatory drugs (NSAIDs).
• Physical therapy: Focused exercises to maintain range of motion, strengthen supporting muscles, and reduce stiffness.
• Injections: Corticosteroid, hyaluronic acid, or biologic (platelet-rich plasma) injections can help reduce inflammation and pain.
• Heat or ice therapy: Can ease soreness and stiffness in the joint.

Surgical options include:

When non-operative care no longer provides relief, surgical options may be considered. These include:

• Arthroscopic debridement: A minimally invasive procedure to remove loose cartilage fragments or bone spurs. This is reserved typically for very mild cases of osteoarthritis.
• Shoulder replacement (arthroplasty): For advanced arthritis, replacing the damaged joint surfaces with smooth artificial components can dramatically relieve pain and restore function. Depending on the condition of the rotator cuff and the severity of arthritis, either a total shoulder replacement or a reverse shoulder replacement may be recommended.

Recovery from surgery typically involves a structured rehabilitation program to regain strength and mobility.

While aging and genetics cannot be changed, there are several steps that can help reduce the risk or delay the progression of shoulder osteoarthritis:

• Protect your joints: Avoid repetitive heavy lifting or overhead strain when possible.
• Maintain shoulder strength and flexibility: Regular stretching and rotator cuff strengthening help keep the joint stable and balanced.
• Treat injuries promptly: Address shoulder injuries early to prevent long-term damage.
• Maintain a healthy weight: Excess body weight contributes to systemic inflammation, which can accelerate cartilage breakdown.
• Stay active: Low-impact exercise promotes joint health and maintains circulation to the cartilage.

Early evaluation and treatment can slow disease progression, minimize pain, and help you maintain an active lifestyle.