Shoulder impingement, also known as subacromial impingement syndrome, is a condition in which the soft tissues in the subacromial space (the space between the top of the humerus and the acromion, part of the shoulder blade) are compressed or pinched during arm movement. This compression can cause pain and limited shoulder movement.
Causes of shoulder impingement may include:
Anatomical structure: Some people may have an anatomy that predisposes to impingement due to an unusual shape of the acromion.Inflammation: Inflammation of the tendons and soft tissues in the subacromial space can reduce the available space and increase the risk of impingement.
Injuries: Previous injuries, such as rotator cuff tendinitis or bursitis, can increase the likelihood of impingement.
Overuse or overuse: Repetitive activities that involve lifting the arm, such as weightlifting or certain sports movements, can contribute to the development of this condition.
Symptoms of shoulder impingement may include pain in the upper and lateral parts of the shoulder, especially when raising the arm. The pain may be sharp or dull and may increase over time if left untreated.
Treatment for shoulder impingement may involve:
Rest and avoidance of activities that worsen symptoms.
Physical therapy and strengthening exercises to improve shoulder stability and reduce compression.
Anti-inflammatory medications to relieve inflammation and pain.
Corticosteroid injections to reduce inflammation in the affected area.
In severe and persistent cases, surgery may be considered to relieve compression and create more space in the subacromial space.