How does continuous micro trauma from impingement affect the rotator cuff?

Continuous micro trauma from impingement has a detrimental effect on the rotator cuff, leading to partial or complete tears. This occurs because the ongoing stress and friction against the rotator cuff tendons can compromise their structural integrity over time. When the tendons are subjected to repetitive mechanical irritation, inflammatory processes can be triggered, resulting in degenerative changes. This may manifest as thickening of the tendons, formation of scar tissue, and ultimately the progression towards tendon tears.

The cumulative effect of this micro trauma is significant; it reduces the tendons’ ability to withstand normal forces, making them more susceptible to injury under stresses that would typically be manageable. Therefore, the impact of continuous micro trauma from impingement is critical to understanding how chronic shoulder conditions develop and progress, reinforcing the importance of early identification and intervention in managing shoulder problems effectively.