Shoulder impingement is a common cause of shoulder pain that can affect your daily activities and overall mobility. If you’ve experienced discomfort in your shoulder that you think may be shoulder impingement or heard others mention it and wondered what it was, then this guide will help you understand what it is, why it happens, and how to prevent it.
Shoulder impingement occurs when the structures in the subacromial space—located above the ball-and-socket joint of the shoulder—become “pinched” or compressed. This space is incredibly small, with a normal range of 7-14mm when the arm is at rest (for comparison, a pea is 10mm).
Key components within this space include:
When these structures become inflamed due to overuse or strain, the space narrows further, increasing the likelihood of impingement, particularly during repetitive overhead movements.
Symptoms include generalized shoulder pain that may radiate down the arm, discomfort during midrange arm movements (known as a “painful arc”), and pain at night, especially when sleeping on the affected shoulder. You might also notice decreased strength or difficulty lifting your arm overhead. If these symptoms persist, consult a healthcare professional for an evaluation and appropriate treatment.
Shoulder impingement is often caused by repetitive strain or improper movement patterns. Key contributors include:
To protect your shoulders and minimize injury risk:
If you suspect shoulder impingement, focus on reducing irritation and strengthening the stabilizing muscles around the shoulder and shoulder blades. Proper rehabilitation includes exercises targeting mobility and stability, guided by a healthcare professional.
Shoulder impingement can significantly impact your quality of life, but with awareness and preventive measures, you can protect your shoulder health. Download our free MoveSafe Mindset, link below, to share the helpful tips you have learned with your colleagues, friends or family.
