Rotator Cuff Tendinitis and Subacromial Bursitis

Rotator cuff tendinitis, tendinopathy, and subacromial bursitis describe pain arising from the rotator cuff tendons and the bursa that helps them glide.

Rotator cuff tendinitis, tendinopathy, and subacromial bursitis describe pain arising from the rotator cuff tendons and the bursa that helps them glide. Symptoms are sometimes called "impingement," but shoulder pain is rarely explained by a single bone simply pinching a tendon. Tendon health, inflammation, strength, stiffness, activity load, and shoulder-blade mechanics can all contribute.

Most patients improve without surgery. Treatment may include temporary activity modification, appropriate medication, physical therapy, a directed home program, and a selected subacromial corticosteroid injection. MRI or ultrasound is not required for every patient.

Dr. Knudsen's evaluation focuses on distinguishing tendon irritation and bursitis from a partial or full-thickness rotator cuff tear, frozen shoulder, arthritis, biceps disease, instability, or pain from the neck. Isolated subacromial decompression is not routinely recommended for rotator cuff-related pain without another surgically treatable problem.

This information is educational and is not a substitute for an individualized medical evaluation. Written and medically reviewed by Michael L. Knudsen, MD | Last reviewed: July 2026