
Chest pain can be musculoskeletal, meaning it comes from the bones, muscles, and tissues that enclose the heart and lungs. Sternum fractures, arthritis, and muscle strain are common causes of chest pain and can result in popping sounds in the sternum. While a popping sternum is usually harmless, it may indicate a more serious condition, such as a fracture, infection, or inflammation. If the popping noise is accompanied by pain, swelling, or discomfort, it is advisable to seek medical attention to rule out any underlying issues.
| Characteristics | Values |
|---|---|
| Musculoskeletal chest pain | Comes from the bones, muscles, tendons, ligaments, and tissues that enclose your heart, known as your chest wall |
| Causes of musculoskeletal chest pain | Injuries (like muscle strains and rib fractures), rheumatic diseases, arthritis, and other rheumatic conditions |
| Chest wall | The framework of muscles and bones that enclose your heart and lungs |
| Musculoskeletal conditions | Can cause chest pain that is different from cardiac (heart-related) chest pain |
| Sternum popping | Can be the result of muscle strain, anxiety, arthritis, or other causes; may be accompanied by pain, swelling, or discomfort |
| Sternum fractures | Can cause pain, difficulty breathing, swelling in the chest, and may affect the lungs and heart |
| Joint noises | Can be caused by gas escaping from synovial joints, cartilage wear and tear due to aging, or cavitation (small bubbles of gas collecting in joints) |
| Muscle pain treatment | Home care, rest, ice packs, anti-inflammatory medications, physical therapy, or corticosteroid shots |
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What You'll Learn

Muscle strain and chest pain
Muscle strains in the chest can occur due to impact injuries or overuse and typically cause sharp pains when moving or breathing. They are common in sports that involve forceful or repetitive motions, such as tennis, golf, gymnastics, and rowing. Weightlifting can also strain the chest muscles if the arms are repeatedly pulled back and overhead. Additionally, chest muscle strains can happen gradually through repetitive strain injuries, where the muscle is used too often without proper rest.
The severity of a muscle strain can vary, and medical professionals classify them into grades. A Grade 1 strain is considered mild, with minor damage to the soft tissues of the chest and minimal impact on range of motion and muscle function. Grade 2 strains are moderate tears with more extensive damage to muscle fibers, resulting in significant loss of strength and motion. Grade 3 strains are complete ruptures of the muscle, which may require surgery to reattach the affected tendon to the bone.
Treating a pulled chest muscle typically involves rest, ice, compression, and elevation (RICE). Over-the-counter pain relievers can help with inflammation and pain management. For chronic strains that don't improve with rest, physical therapy or changing your exercise routine to build strength in the surrounding areas may be recommended. It is important to keep the chest muscles stretched and strong to avoid further injury and promote healing.
While joint noises like popping, cracking, and snapping are common and usually harmless, if they are accompanied by chronic pain or pressure that requires joint cracking for relief, it may be a cause for concern. In such cases, consulting a healthcare provider is advisable.
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Sternum fractures and popping sounds
It is important to note that while joint popping is generally not a cause for concern, there are a few scenarios where medical attention is necessary. If you experience chronic pain or pain specifically after the joint cracks, it is advisable to seek medical advice. Additionally, if you feel significant pressure in the joint that can only be relieved by popping it, a doctor should be consulted.
In the case of sternum fractures, surgery may be required, depending on the severity of the fracture. Therefore, it is crucial to seek medical attention to ensure proper diagnosis and treatment. Sternum fractures can be extremely painful and may cause additional symptoms such as difficulty breathing and swelling in the chest. In some instances, the injury may also impact the lungs and heart.
There are various reasons why the sternum may pop. The joints around the sternum, also known as the breastbone, can produce popping sounds for several reasons. Sternum popping can occur during everyday activities, such as stretching or breathing deeply. It is similar to the popping or cracking sounds experienced in other joints like the hips or neck. While it is not always a cause for concern, if it accompanies other symptoms, it may indicate an underlying issue that requires medical attention.
Stress has been linked to aggravating popping sounds in the sternum and increasing swelling and pain in the breastbone area, particularly during panic attacks. Additionally, arthritis, while uncommon in the sternum, can develop in the sternoclavicular joint, where the collarbone meets the sternum. Individuals with widespread or severe arthritis may hear clicking or popping sounds in their sternum due to cartilage wear and tear.
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Muscle spasms and sternum clicking
Muscle pain in the chest area can be musculoskeletal chest pain, which comes from the muscles, bones, and tissues that enclose the heart. It is caused by injuries, rheumatic diseases, or arthritis and is different from cardiac chest pain.
Muscle spasms in the chest, back, and shoulders can cause the joints and other tissues in the area to shift, leading to the sternum popping or crackling. Sternum popping is not usually a cause for concern, but if you experience pain, swelling, or discomfort, you should seek medical attention. Sternum popping can be caused by a muscle strain, injury, arthritis, or other factors. It can also be caused by anxiety, which can increase the popping sounds in the sternum and cause swelling and pain in the breastbone area.
If you are experiencing pain in the chest area, it is important to determine whether it is musculoskeletal or cardiac chest pain. Cardiac chest pain, or angina, is related to the heart and may be accompanied by symptoms such as sweating, nausea, or shortness of breath. It may also feel worse with exercise and improve with rest. If you are experiencing these symptoms, seek immediate medical attention as they could indicate a heart attack.
To treat muscle spasms and sternum clicking, doctors may recommend rest, home remedies, or prescription-strength medications. It is important to identify the underlying cause of the symptoms and treat them accordingly. In some cases, surgery may be required for a fractured sternum.
While sternum clicking is usually not a cause for concern, it is always advisable to consult a medical professional if you are experiencing any discomfort or have concerns about your health. They can help diagnose the issue and provide appropriate treatment options.
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Chest injuries and sternum separation
Chest injuries can range from minor to severe and may require immediate medical attention. They can be caused by impact trauma to the chest, such as falling from a height, a road accident, or contact sports. Bruising, cuts, scrapes, and broken bones, including fractured ribs, collarbones, or sternum (breastbone), are all possible injuries to the chest wall. More severe injuries can lead to internal bleeding, while injuries to the heart, lungs, or aorta can be life-threatening.
The sternum, or breastbone, is a flat bone located in the centre of the chest and is an important component of the chest wall. A fractured sternum is a break in this bone and can occur as a result of a direct blow to the chest, such as from a car accident or contact sports. Symptoms of a fractured sternum include pain and tenderness at the site of the fracture, as well as pain when breathing, coughing, or moving. Treatment for a fractured sternum typically involves managing pain and allowing the bone to heal, which can take several weeks. In some cases, surgery may be required to stabilise the fracture.
While a splintering noise in the chest is not specifically mentioned in relation to chest injuries or sternum separation, it is known that joints can often make popping, cracking, or snapping noises. These noises are generally not a cause for concern unless they are accompanied by pain or the feeling of needing to crack the joint to relieve pressure. The noises are often due to the movement of muscles and soft tissue fibres surrounding the joints and can be influenced by body positioning and activity levels. As such, maintaining good posture, staying active, and stretching can help keep joints healthy.
Musculoskeletal chest pain can arise from muscles, bones, or joints in the chest wall and is distinct from cardiac chest pain. Injuries, such as muscle strains and rib fractures, are common causes of musculoskeletal chest pain. This type of pain may be sudden or develop over time and can be accompanied by symptoms such as pressure, tingling, or numbness. However, differentiating between musculoskeletal and cardiac chest pain can be challenging, and chest pain of any kind warrants medical attention, especially if it persists or is accompanied by other concerning symptoms.
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Arthritis and rheumatic diseases
Arthritis is a group of more than 100 diseases that cause joint inflammation, resulting in stiffness, swelling, and pain. Rheumatic diseases, on the other hand, typically affect joints, tendons, ligaments, bones, and muscles, causing pain, stiffness, and swelling in the joints and sometimes affecting other areas of the body, such as internal organs.
Some common types of arthritis and rheumatic diseases include:
- Osteoarthritis: This damages the tissue covering the ends of bones, causing bones to rub together, leading to pain, swelling, and reduced mobility.
- Polymyalgia rheumatica: This causes muscle pain and stiffness in the shoulders, upper arms, hip area, and neck.
- Giant cell arteritis: This is related to polymyalgia rheumatica and causes headaches, scalp tenderness, jaw pain, and eye problems.
- Psoriatic arthritis: This occurs in people with psoriasis and affects the joints and areas where tissues attach to bones.
- Reactive arthritis: This is a form of arthritis triggered by an infection. It results in joint pain, swelling, and stiffness, along with potential fever and tiredness.
- Scleroderma: This causes tight, hard skin and can also impact blood vessels and organs.
- Sjögren’s disease: This affects the glands that produce moisture, leading to dryness in the mouth and eyes.
- Lupus: This is an autoimmune disorder where the body's defence system attacks healthy cells and tissues, causing damage throughout the body.
- Ankylosing spondylitis: This type of arthritis affects the spine, causing redness, heat, swelling, and pain where the spine joins the pelvis.
While muscle pain can be a symptom of arthritis and rheumatic diseases, it is not clear if it can cause a "splintering noise" in the chest. Musculoskeletal chest pain can arise from muscles, bones, or joints in the chest wall and is typically distinct from cardiac chest pain. However, it is important to seek medical attention if you experience severe or persistent muscle pain, especially if accompanied by other symptoms such as fever, fatigue, chest pressure, abnormal heartbeat, or shortness of breath.
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Frequently asked questions
Muscle pain can be caused by straining the joints or muscles associated with the sternum, which may result in a popping sound. However, it is not always the case that muscle pain will cause a splintering noise in the chest.
Muscle pain in the chest, or musculoskeletal chest pain, can be caused by injuries, rheumatic diseases, or arthritis. It may also be caused by muscle stress from overuse, including repetitive strain injuries.
If you experience muscle pain and a splintering noise in your chest, it is advisable to seek medical attention to ensure that there are no fractured bones or other underlying issues.











































