What is shoulder impingement?
Shoulder impingement syndrome occurs when the tendons of the rotator cuff muscles and the bursa within the shoulder joint become compressed and irritated. This condition typically leads to pain and inflammation, especially during overhead movements or activities that involve raising the arm. The rotator cuff, consisting of four muscles and their tendons, plays a crucial role in stabilizing the shoulder joint and facilitating various arm movements.
Symptoms of shoulder impingement
Common indicators include persistent shoulder pain, especially during activities that involve raising the arm, such as reaching overhead or behind the back. Individuals may also experience discomfort when sleeping on the affected side or while performing tasks that require arm movements above shoulder level.
The pain associated with shoulder impingement tends to localize around the shoulder joint and may radiate down the arm. Some people notice weakness in the affected arm, particularly when lifting objects or performing repetitive motions. Swelling and tenderness around the shoulder blades or along the front and side of the shoulder are also typical signs of shoulder impingement syndrome.
Causes of shoulder impingement
The primary cause of shoulder impingement is repetitive overhead motions, such as those required in sports like tennis or activities like painting or lifting. When the space between the acromion (a part of the shoulder blade) and the rotator cuff tendon narrows, it can pinch the tendons and bursa, resulting in discomfort and limited mobility. Individuals with shoulder impingement often experience pain on the affected arm straight, particularly when reaching upwards or behind the back.










