You’ve been dealing with shoulder pain for months. Reaching overhead is harder, and putting on a jacket hurts. You finally get an X-ray, and the result comes back normal.

So why does your shoulder still hurt?

The answer is often simple: the X-ray wasn’t designed to see the problem. Many causes of shoulder pain and stiffness involve soft tissues that X-rays can’t show. Here’s what a Chicago rheumatologist wants you to know about choosing the right imaging, and why it matters for your treatment.

This article is for educational purposes only and is not a substitute for a medical evaluation.

What Causes Loss of Shoulder Range of Motion?

Shoulder stiffness, pain and impingement can come from several different sources. Some involve the bones and joints. Others involve the tendons, ligaments and cartilage that support the shoulder.

Common causes include:

• Osteoarthritis (wear-and-tear arthritis) in the main shoulder joint or the AC joint
• Rotator cuff tendon injuries, including partial or full tears
• Shoulder impingement, where tendons get pinched during movement
• Labral tears, damage to the ring of cartilage that stabilizes the joint
• Ligament strains or injuries, which can cause instability

Each of these problems needs a different approach, which is why an accurate diagnosis comes first.

What Can an X-Ray Show?

X-rays are a valuable first step. They are quick, widely available and very good at looking at bone.

When an X-Ray Is Helpful

An X-ray can help identify:

• Osteoarthritis in the shoulder joint or AC joint
• Fractures
• Dislocations

If you have chronic shoulder pain rather than a recent injury, a fracture or dislocation is less likely. Your problem is more likely something that has developed over time.

What an X-Ray Can’t Show

X-rays do not show soft tissues well. That means they can miss:

• Rotator cuff tears
• Labral tears
• Ligament injuries
• Tendon impingement

So a “normal” X-ray doesn’t mean nothing is wrong. It may simply mean the problem lies in a structure the X-ray can’t see.

Better Imaging Options for Persistent Shoulder Pain

If your shoulder pain continues and your X-ray is normal, the next step is usually ultrasound or MRI. Which one is best depends on what your doctor is looking for.

Ultrasound: The Preferred Choice for Rotator Cuff Tears

For a suspected rotator cuff tear, musculoskeletal ultrasound is often the preferred imaging test.

Here’s why:

• It’s dynamic. Your shoulder can be moved through its range of motion during the scan.
• It reveals hidden areas. Movement can expose parts of the tendon that may be hidden in a still image.
• It shows impingement in real time. Your doctor can see whether a tendon is getting pinched as you move.
• It can detect instability. Watching the joint move can suggest a ligament injury.

The main limitation: Ultrasound results depend heavily on the skill of the person performing the scan. In the United States, relatively few physicians are trained to perform detailed shoulder ultrasound, so it isn’t always easy to access.

MRI: Detailed Views of Cartilage and Bone

MRI is more widely available, in part because many radiologists are trained to read it. It also has some clear strengths.

MRI is especially useful for:

• Labral tears, which ultrasound does not show as well
• Bone injuries, such as bone bruising or other damage not visible on X-ray
• A broad overview of the shoulder’s soft tissues and bone in one study

What About Ligaments?

Both ultrasound and MRI can evaluate ligaments to some degree. Ultrasound has an added advantage because it shows the joint in motion, which can reveal instability that points to a ligament injury.

Quick Comparison: Which Shoulder Imaging Test Is Right?

Why the Right Diagnosis Leads to Better Joint Pain Relief

Treating shoulder pain without knowing the cause is a guessing game. A rotator cuff tear, a labral tear and osteoarthritis may all feel similar, but they don’t respond to the same treatments.

Getting the right imaging helps your rheumatology specialist:

• Pinpoint the exact source of your pain
• Rule out other conditions
• Recommend treatment matched to your specific injury
• Avoid treatments that are unlikely to help

Treatment Options After Diagnosis

Once the cause is clear, your care plan may include options such as:

• Physical therapy to restore strength and range of motion
• Targeted, image-guided injections
• Regenerative medicine treatments, such as PRP therapy (platelet-rich plasma), which may be considered for certain tendon and joint conditions
• Osteoarthritis treatment strategies for wear-and-tear arthritis
• Chronic pain management to improve daily function

The right option depends on your diagnosis, your health history and your goals, which is why a thorough evaluation matters.

When Should You See a Chicago Rheumatologist?

Consider scheduling an evaluation if you:

• Have shoulder pain lasting more than a few weeks
• Are losing the ability to lift or rotate your arm
• Have a normal X-ray but ongoing symptoms
• Feel weakness, catching or instability in the shoulder
• Have arthritis or an autoimmune condition affecting your joints

A specialist in arthritis care and regenerative medicine can determine which imaging test fits your situation and build a treatment plan around the results.

Conclusion: Don’t Let a Normal X-Ray Be the End of the Story

If you’re losing range of motion in your shoulder, a normal X-ray is not the final answer. Many common shoulder problems, including rotator cuff tears, labral tears and ligament injuries, simply don’t show up on X-ray.

Ultrasound and MRI can reveal what’s really going on, so your treatment can target the true source of your pain.

Looking for arthritis treatment in Chicago or expert care for shoulder pain? Visit ChicagoArthritis.com to learn more about our rheumatology and regenerative medicine services, or to schedule a consultation with our team.