A rotator cuff tear is an injury to a group of muscles and tendons that stabilize the shoulder joint. This condition can occur due to acute injuries, such as falling, or from gradual wear and tear over time. Symptoms often include pain, weakness, and limited range of motion in the affected arm. Diagnosis typically involves a physical examination and imaging tests like MRI or ultrasound. Treatment options vary based on the severity of the tear and may include rest, physical therapy, or surgery. Early intervention can help restore function and reduce pain.