What is a common consequence of untreated rotator cuff tendinitis?

Untreated rotator cuff tendinitis often leads to inflammation and degeneration of the rotator cuff tendons, which can compromise their integrity over time. As the condition persists without intervention, the stress on the tendons can cause them to weaken significantly, making them more susceptible to tears. This progression to a rotator cuff tear is a serious consequence as it can greatly affect shoulder function and lead to chronic pain, decreased mobility, and strength loss.

In contrast, increased shoulder mobility is generally not a consequence of untreated tendinitis, as the inflammation and pain typically restrict movement. Shoulder instability is also not a direct outcome of tendinitis itself, although it could be a result of other shoulder conditions. Improved strength is unlikely, as tendinitis usually leads to pain and weakness rather than strengthening the shoulder.