Rotator Cuff Tears vs. Shoulder Dislocations: What’s the Difference and How to Treat Them in North Texas

Shoulder pain can have many causes, but two of the most common injuries we see at Plano Orthopedic & Sports Medicine Center (POSMC) are rotator cuff tears and shoulder dislocations. While both can lead to pain, weakness, and limited motion, they’re very different in how they occur and how they’re treated. Understanding the difference can help you get the right care and recover faster.

What Is a Rotator Cuff Tear?

Your rotator cuff is a group of four muscles and tendons that stabilize the shoulder and allow it to move smoothly. A rotator cuff tear happens when one or more of these tendons are damaged or torn, either from an acute injury or gradual wear and tear.

Common causes include:

• Falling on an outstretched arm

• Repetitive overhead motions (common in athletes and manual laborers)

• Age-related degeneration of the tendons

Symptoms of a rotator cuff tear:

• Deep, dull shoulder pain that worsens at night

• Weakness when lifting or rotating your arm

• Difficulty performing everyday tasks such as combing your hair or reaching overhead

What Is a Shoulder Dislocation?

A shoulder dislocation occurs when the upper arm bone (humerus) slips out of the shoulder socket (glenoid). Because the shoulder joint is the most mobile joint in the body, it’s also the most prone to dislocation.

Common causes include:

• Sports injuries or falls

• Sudden impacts, such as during a car accident

• Previous dislocations that weaken the joint over time

Symptoms of a shoulder dislocation:

• Intense, sudden pain after injury

• Visible deformity or bulging at the shoulder

• Swelling, bruising, and inability to move the arm

Key Differences Between Rotator Cuff Tears and Shoulder Dislocations