Shoulder Bursitis

Subacromial bursitis is inflammation of the synovial bursa located between the acromion and the rotator cuff tendons. The bursa enables smooth gliding of tendons during arm movement. When inflamed, it thickens and fills with fluid, increasing compression of the tendons.

Shoulder bursitis is rarely isolated — it almost always occurs together with impingement syndrome, rotator cuff tendinitis, or calcifications. Therefore, treatment should address not only the bursa but also the underlying cause of inflammation.

Causes:

• Impingement — chronic compression of the bursa between bones
• Overuse — repetitive overhead movements
• Trauma — fall or blow to the shoulder
• Calcifications — bursa irritation from calcium crystals
• Rheumatoid Arthritis — autoimmune inflammation

Symptoms:

• Pain in the upper and outer shoulder
• Worsening when raising arm above shoulder level
• Night pain when lying on the affected side
• Localized swelling and tenderness
• Limited mobility