Bursitis of the shoulder

A bursa is a fluid-filled sac that cushion and lubricates bones and tendons when they move. The body is comprised of over 150 bursae. Bursitis is an inflamed or swollen bursa. There are 5 main bursae in the shoulder:- Subacromial-deltoid bursa - located between the joint capsule and the deltoid muscle- Subscapular recess - located between the joint capsule and the subscapularis muscle- Subcoracoid bursa - located below the coracoid- Coracoclavicular bursa - located between the coracoid and the clavicle- Supra-acromial bursa - located above the acromionBursitis in the shoulder can occur in any of the bursae but the most common location is the subacromial-deltoid bursa. It is the largest bursa which is usually related to impingement between the rotator cuff and the acromion.