Jonathan Struggling with Shoulder Pain? It Could Be Bursitis. Shoulder bursitis occurs when the bursaa fluid filled sac that cushions your shoulder jointbecomes inflamed, leading to pain, swelling, and limited mobility. Common Shoulder bursitis is a condition characterized by inflammation of the bursa, a small fluid filled sac that cushions the bones, tendons, and muscles near the shoulder joint. This inflammation can cause Bursitis Advanced Medical & Wellness Center Beavercreek, OH Injections for Rotator Cuff Disease Shoulderdoc Bursitis Everest Regenerative Medicine Subacromial Cortisone Injection, Orthosports Orthopaedic Surgeons