Shoulder Arthritis FAQ: 15 Questions

Shoulder arthritis is most commonly caused by age-related wear and tear (osteoarthritis), which breaks down the cartilage lining the joint. Other causes include rheumatoid arthritis (autoimmune), post-traumatic arthritis from a previous injury or fracture, rotator cuff tear arthropathy, and avascular necrosis. Age, genetics, and overuse from repetitive overhead work or sports increase risk.

The most common symptoms are deep, aching pain in the shoulder joint (often worsening at night), stiffness that limits range of motion, grinding or clicking sounds during movement, and difficulty reaching overhead or behind the back. Pain may radiate down the arm. Symptoms typically develop gradually over months to years.

Diagnosis typically involves a physical exam assessing range of motion and pain location, X-rays showing joint space narrowing and bone spurs, and a medical history review. In some cases, an MRI may be ordered to evaluate soft tissue damage. Blood tests can help rule out rheumatoid arthritis or other inflammatory conditions.

Non-surgical treatments include physical therapy, anti-inflammatory medications (oral and topical), cortisone injections, hyaluronic acid injections, activity modification, and ice or heat therapy. When conservative treatments fail after 3 to 6 months, surgical options include arthroscopic debridement, shoulder resurfacing, or total shoulder replacement.

Yes. Cortisone injections provide rapid anti-inflammatory relief lasting 4 to 8 weeks and are well-established for shoulder arthritis. Hyaluronic acid injections are FDA-approved for knee OA and used off-label for shoulder arthritis, with growing clinical evidence showing 3 to 6 months of pain relief. Image-guided injection improves accuracy and outcomes.

Effective exercises include pendulum swings (gentle range-of-motion), wall crawls, external rotation with resistance bands, scapular squeezes, and isometric strengthening. Aquatic therapy is particularly helpful because water supports the joint while allowing movement. A physical therapist should design your program to avoid aggravating the joint.

Surgical options include arthroscopic debridement (cleaning out loose fragments), total shoulder replacement (most common for severe OA), reverse total shoulder replacement (for patients with rotator cuff tears), and shoulder resurfacing (preserves more bone). Shoulder replacement has a 90-95% satisfaction rate and implants typically last 15 to 20 years.

After total shoulder replacement, expect a sling for 4 to 6 weeks, restricted lifting for 3 months, and physical therapy for 3 to 6 months. Most patients notice significant pain reduction within weeks. Full range of motion improvement continues for up to a year. Driving resumes at 6 to 8 weeks. Return to desk work is possible at 2 to 4 weeks.

Sleep on your unaffected side with a pillow supporting the painful arm. Alternatively, sleep on your back with a small pillow under the affected arm. Avoid sleeping on the arthritic shoulder. Taking anti-inflammatory medication 30 minutes before bed, applying ice for 15 minutes, and gentle stretching can reduce nighttime pain.

Use assistive tools like long-handled reachers, adaptive kitchen utensils, and button hooks. Reorganize frequently used items to waist height. Use both hands for heavy objects. Pace activities to avoid overloading the joint. Occupational therapy can teach joint protection techniques specific to your daily routine and goals.

Medicare Part B covers shoulder arthritis treatments including doctor visits, physical therapy, cortisone injections, X-rays, MRI, and shoulder replacement surgery. Hyaluronic acid injections for the shoulder may require prior authorization through Medicare Advantage plans. You are responsible for the 20% coinsurance after your annual deductible.

Costs vary by treatment: physical therapy is $50-$150 per session, cortisone injections $150-$350, hyaluronic acid injections $500-$1,500 per treatment cycle, and total shoulder replacement $25,000-$45,000. With Medicare and supplemental coverage, out-of-pocket costs for most non-surgical treatments are minimal.

Seek medical attention if shoulder pain is sudden and severe, follows an injury, prevents you from raising your arm, includes weakness or numbness in the arm, or is accompanied by swelling and redness with fever (possible infection). Pain that worsens over weeks despite rest also warrants evaluation.

Frozen shoulder (adhesive capsulitis) causes progressive stiffness from capsule inflammation and typically resolves in 1 to 3 years. Shoulder arthritis involves cartilage breakdown and is permanent but manageable. Frozen shoulder primarily limits active and passive motion equally, while arthritis pain worsens with activity and is visible on X-ray.

Shoulder arthritis is a chronic condition that progresses slowly. Most patients manage effectively with non-surgical treatments for years. When surgery becomes necessary, total shoulder replacement has excellent outcomes — over 90% of patients report significant pain relief and improved function. Modern implants last 15 to 20 years or longer.