Introduction: The Sound That Turned Off the Alarm
Ana was 42 years old and had been feeling a “clack” in her right shoulder every time she picked up a bag from the supermarket for months. At first he ignored it. There was no pain, just an annoying snap. But over time, the sound became more frequent, and what was once just a noise, turned into morning stiffness and small pangs of pain. Sound familiar?
Many patients like Ana come to the office asking:
“Is it normal for my shoulder to thunder?”
This blog is designed to answer that question in depth. We’ll explore why it happens, when it’s worrisome, and what you can do to prevent complications.
Why does the shoulder sound or thunder?
That popping, cracking, or clicking in the shoulder is known as scapulohumeral crepitus. It is a common phenomenon, especially in active people or people over 30 years of age. It can be due to harmless causes or underlying injuries that require attention.
Common causes:
Air bubble in the joint
Similar to the sound of knuckles. It is harmless and does not indicate harm.
Friction of tendons or ligaments on the bones
Most common when moving the arm over the shoulder (abduction).
Rotator cuff tendonitis
Inflammation of the tendons that stabilize the shoulder.
Joint instability or subluxation
The arm bone (humerus) is not kept well centered.
Cartilage lesions (labrum or osteoarthritis)
Associated with pain, blockage or a feeling of snagging.
Scapulothoracic syndrome
Friction between the scapula and rib cage (rarer).
When is it normal and when to worry?
Situation | Should I be worried? |
Occasional cracking, without pain or limitation | ❌ No |
Constant sound with pain or weakness | ✅ Yes |
Pain at night or when sleeping on the affected side | ✅ Yes |
Loss of strength when lifting objects | ✅ Yes |
Visible inflammation or instability | ✅ Yes |
🔔 Warning sign: If the sound of the shoulder is accompanied by sharp pain, clicking when moving it or feeling that it is “coming out”, you should consult an orthopedist.
Diagnosis: What tests are used?
Specialized physical evaluation
Hawkins, Neer, Yergason tests and more.
Musculoskeletal ultrasound
Useful for detecting tendonitis or bursitis.
MRI (MAGNETIC RESONANCE IMAGING) MRI
It detects tears, rotator cuff injuries or osteoarthritis.
X-rays
To evaluate joint space, osteophytes or calcifications.
Available Treatments
Treatment depends on the cause of the sound:
If it is due to slight mechanical friction:
Relative rest and modification of repetitive motions
Stretching and joint mobility exercises
Supplements such as collagen and magnesium (only if medically indicated)
If there is inflammation:
Oral or topical anti-inflammatories
PHYSIOTHERAPY
Corticosteroid or hyaluronic acid-guided infiltration
If rotator cuff weakness is present:
Strengthening exercises (isometric and eccentric)
Personalized Physical Therapy Guide
Simple exercises to prevent shoulder cracking
⚠️ Always consult a specialist first.
External rotations with elastic band
Strengthens the rotator cuff.Wall slide
Improves scapular glide.Pectoral Stretch
Release tension on the anterior shoulder.
Practical tips for everyday life
Avoid lifting heavy objects above shoulder level.
Maintain good posture (especially if you’re working in front of a computer).
Don’t ignore the pain. The body is talking to you.
Alternate the use of both arms to avoid unilateral overload.
Take active breaks if you work long hours sitting.
When to consult a specialist?
If you have been with crunching + discomfort for more than 3 weeks.
If you lost mobility or strength.
If you have a hard time sleeping or getting dressed because of the pain.
If you feel your shoulder “pop out” or get stuck.
👉 At DrCarlosRebollon.com, we have advanced technology to diagnose and treat shoulder injuries accurately and painlessly.
You can schedule a consultation by WhatsApp here:
📲 Contact Now
Conclusion: Listen to your shoulder
The shoulder is one of the most complex joints in the body. Don’t ignore their signs. An occasional sound may be normal, but if it’s accompanied by pain, swelling, or loss of function, it’s time to take action.
Remember: detecting early is key to avoiding surgery and recovering your quality of life.
