Causes

The causes leading to a subacromial bursitis include a traumatic impact, abrupt movements, overuse and incorrect posture of the shoulder joint during activities. Specifically, the movements that exercise pressure to the bursa include arm elevation, shoulder rotation, heavy weight lifting, pushing or pulling or lying on the shoulder. These activities when incorrect or repeated cause friction and inflammation of the bursa. This pathology is most frequent in people over 40 years of age.