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 Injections for Rotator Cuff Disease Shoulderdoc Subacromial Cortisone Injection, Orthosports Orthopaedic Surgeons Shoulder Bursitis From Overhead Painting Patient Overview A 58 year old who recently repainted their home experiences top shoulder pain when lifting the arm above 90. Assessment Tender subacromial area Painful arc during elevation Weak