Sub acromial Bursitis
Bursitis is a condition where the bursa becomes inflamed or irritated and causes pain. The bursa is a tiny sac filled with lubricating fluid, located between tissues such as bone, tendons, muscles and skin and help in reducing rubbing and friction. Bursitis commonly occurs near joints that perform repetitive motions like shoulder, elbow, hip and knee.
It is estimated that there are over 150 bursae in our body.
Sub acromial Bursitis is an injury or inflammation of the shoulder bursa. Shoulder has many bursae but the most commonly inflamed one is sub acromial bursa and hence shoulder bursitis is often called as sub-acromial bursitis. Sub-acromial bursa lies between the humerus and the acromion. Normally, the tendons and bursa slide easily between these two bones. But because of arthritis, trauma etc the space between these bones become narrow causing irritation in the bursa leading to inflammation pain, thus bursitis.