What Causes Shoulder Pain and Popping When I Lift My Arm?

1. Shoulder Impingement Syndrome

This happens when the rotator cuff tendons get pinched under the acromion, which is part of the shoulder blade. The pinching causes irritation and swelling, leading to pain, especially when you raise your arm overhead. You may also hear popping sounds as the tendons rub against nearby bone or soft tissue. It’s common in athletes and people who often do overhead movements.

2. Rotator Cuff Injuries and Tears

Doing the same shoulder movements over and over or having an injury can damage the rotator cuff tendons. This causes swelling, pain, weakness, and discomfort. If the tendon is partially or fully torn, you might hear popping or clicking sounds when moving your shoulder. These injuries also reduce your ability to move the arm or lift it easily.

3. Labral Tears

The labrum is a ring of cartilage that helps keep the shoulder joint stable. When it tears due to injury or repeating the same motion, it can cause pain, popping, or catching sensations in the shoulder. You might feel like your shoulder is loose, locks up, or gives out during movement.

4. Scapulothoracic Bursitis

This condition affects the bursae, small, fluid-filled sacs, between the shoulder blade and the chest wall. When these sacs become inflamed from overuse, bad posture, or muscle imbalance, they cause pain and a popping or snapping sound when you move your shoulder.

5. Osteoarthritis and Degenerative Changes

As the cartilage in your shoulder joint wears down, either from aging or a past injury, your bones may start to rub against each other. This bone-on-bone contact leads to pain, stiffness, and a grating or popping sound called crepitus. These changes can reduce shoulder movement and cause ongoing pain.

6. Benign Bone Growths (Osteochondroma)

Sometimes, a non-cancerous bone lump can grow near the shoulder joint. This might cause mechanical popping when you move, even without pain. These growths usually don’t cause problems unless they press on nearby tissue or nerves, which can then lead to pain or difficulty moving your shoulder.

7. Injuries and Fractures

Old injuries, like fractures or bones that didn’t heal properly, can change how your shoulder moves. This can lead to popping sounds from rough bone surfaces or scar tissue. Depending on how bad the injury was, you may also feel pain or have trouble moving your shoulder normally.

When to See a Specialist for Shoulder Pain and Popping?

You should think about seeing a specialist, like an orthopedic doctor, if your shoulder pain and popping:

• Affects your sleep or daily activities
• Happens after an injury or shoulder dislocation
• Makes it hard to move your shoulder or lift your arm
• Gets worse or starts hurting even when you’re resting
• Comes with swelling, visible changes, or a lump near the shoulder
• Causes numbness, tingling, or weakness that spreads down your arm
• Includes ongoing popping, clicking, or a feeling that the shoulder is unstable
• Lasts more than two to four weeks and doesn’t get better with rest or home care