
The human rib cage is a complex structure, with multiple joints and cartilaginous connections. It is designed to protect the organs it surrounds and support respiration. The chest wall is made of bone, cartilage, ligaments, tendons, and covered by muscle and soft tissues. The intercostal muscles lie between the ribs and help build the chest wall and assist in breathing. These muscles can be strained through overexertion or injury, causing pain and difficulty breathing.
| Characteristics | Values |
|---|---|
| Location | Intercostal muscles are located between the ribs |
| Composition | Three layers of muscles: external, internal, and innermost |
| Function | Help build the chest wall, assist in breathing, and protect organs |
| Injuries | Intercostal muscle strain, inflammation, stiffness, and fractures |
| Symptoms | Pain, swelling, stiffness, difficulty breathing, and mobility issues |
| Treatment | Rest, ice therapy, heat therapy, gentle stretching, and medication |
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What You'll Learn

Intercostal muscles are the muscles between the ribs
The intercostal muscles are the muscles between the ribs. They are responsible for linking the ribs together and helping with breathing. They do this by changing the size of the space inside the rib cage. There are three layers of intercostal muscles: external, internal, and innermost. The external intercostal muscles are the outermost layer and lie directly under the skin. They originate from the lower border of the rib above and insert into the upper border of the rib below, expanding the chest wall during inhalation. The internal intercostal muscles are the intermediate layer and originate from the costal groove near the inferior border of the rib above and insert into the upper border of the rib below, helping to collapse the lung during exhalation. The innermost intercostal muscles cross more than one intercostal space and assist the internal and external intercostals in their function.
Intercostal muscles are essential for breathing and help to build the chest wall. They work cooperatively with other muscles, such as the diaphragm, when taking deeper breaths. The intercostal muscles also contribute to other activities that involve taking a breath, such as forcefully pushing air out of the lungs when sighing or coughing. The name "intercostal" comes from Latin words that mean "between ribs."
Intercostal muscle strain is a common injury affecting the muscles between two or more ribs. Symptoms include sharp pain, stiffness, and difficulty breathing. This type of injury is often caused by overexertion or a sudden increase in physical activity, especially in contact sports or high-thrust sports that involve the arm, shoulder, and upper back. Diagnosis of intercostal muscle strain is based on patient history, physical examination, and palpation to define the area of tenderness and swelling. Treatment may include rest, ice, compression, and elevation, as well as over-the-counter anti-inflammatory medications. In some cases, doctors may inject the area with lidocaine and corticosteroids to reduce pain and swelling.
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Intercostal muscle strain symptoms
Intercostal muscles are the muscles that lie between our ribs. They consist of three layers of muscles — external, internal, and innermost — and they combine to fill the space between the ribs. Intercostal muscle strain occurs when these muscles are twisted, strained, or stretched too far, causing a tear.
Intercostal muscle strain is almost always the result of overexertion or injury. Some common causes include:
- Trauma from a fall, car accident, or direct blow from contact sports
- Repetitive torso twisting from sports such as tennis, golf, or dancing
- Overhead activities or lifting above the shoulder
- A sudden increase in physical activity, especially without proper warm-up
Symptoms of intercostal muscle strain include:
- Sharp, direct pain in the upper back or rib cage
- Muscle tension and stiffness, which can worsen over time with repetitive stress
- Pain when coughing, sneezing, or breathing deeply
- Swelling between and around the affected ribs
- Difficulty breathing due to pain, resulting in short, shallow breathing patterns
The severity of intercostal muscle strain can vary, and healing time depends on the extent of the injury. Mild strains commonly heal within a few days, while moderate strains may take 3 to 7 weeks. Severe strains involving a complete tear of the muscles can take even longer, sometimes beyond 8 weeks.
If you suspect an intercostal muscle strain, it is important to seek medical attention, especially if you experience difficulty breathing. Treatment options may include rest, ice packs, heat therapy, pain medications, and breathing exercises. In some cases, a doctor may inject the area with lidocaine and corticosteroids to reduce pain and swelling.
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Intercostal muscle strain treatment
Intercostal muscles are the muscles that lie between the ribs. An intercostal muscle strain refers to an injury affecting the muscles between two or more ribs. It is almost always the result of overexertion or injury. Symptoms include sharp, direct pain, stiffness, and difficulty breathing.
If you suspect that you have an intercostal muscle strain, you should schedule an appointment with your doctor. They can assess your symptoms and determine the underlying cause. In the meantime, you can try the following methods for relief:
- Avoid twisting and reaching activities that make the pain worse.
- Take over-the-counter anti-inflammatories like ibuprofen (Advil) or naproxen (Aleve), or simple pain relievers like acetaminophen (Tylenol).
- Apply ice to the affected area for the first 48 hours.
- After the first 48 hours, apply heat to the injured ribs. Heat can help loosen and relax the muscles. You can apply heat for 20 minutes at a time with a heating pad or a warm damp towel.
- Take a warm bath with magnesium sulfate (Epsom salts) added. The dissolved minerals may absorb through your skin and slightly increase your blood levels of magnesium, an important mineral for muscle function.
- Rest and limit all physical activity for a few days to allow time for the muscle strain to recover.
Prevention
To prevent future muscle strains, be sure to warm up well before sports or exercise, and don’t overdo activities that your body isn’t used to doing.
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Intercostal muscle strain prevention
Intercostal muscles are the muscles that lie within the rib cage. Intercostal muscle strain is an injury that affects the muscles between two or more ribs. It is almost always the result of overexertion or injury. Symptoms include sharp pain, stiffness, and difficulty moving and breathing.
To prevent intercostal muscle strain, it is important to warm up before engaging in sports or exercise. It is also important to avoid overexerting yourself during physical activity, especially if your body is not used to it.
If you experience intercostal muscle strain, it is recommended that you rest and limit physical activity for a few days to allow the muscle strain to recover. During the first 48 hours, you can apply an ice pack or a cold pack to the affected area to reduce inflammation and alleviate pain. After this period, you can start applying heat to the injured ribs to relax the muscles and improve circulation. This can be done with a heating pad, a warm damp towel, or a warm bath with magnesium sulfate (Epsom salts).
Once the pain has subsided, you can start doing gentle physical therapy and stretching to help heal the injured muscles. Some stretches include breathing exercises and the forward stretch. For the forward stretch, sit on the floor with your left leg straight in front of you and your right leg bent so that the sole of your foot touches your knee. Lean forward over your right leg as far as is comfortable, rotating your torso slightly and touching both palms to the floor if possible. Hold the stretch for 15 to 30 seconds, then repeat on the opposite side.
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Other types of rib pain
The intercostal muscles lie between the ribs and help build the chest wall and assist in breathing. Intercostal muscle strain is an injury affecting the muscles between two or more ribs. It can be caused by overexertion or injury and can result in mild discomfort or severe symptoms. The symptoms include sharp, direct pain, stiffness, and difficulty breathing.
Rib cage pain can be caused by a variety of factors, some of which are medical emergencies requiring immediate attention. Here are some other causes of rib pain:
- Costochondritis: This is a condition that involves inflammation of the cartilage in the rib cage that joins the upper ribs to the sternum, known as the costosternal joint. It can cause sharp chest pain, especially during movement or breathing, and usually improves over time without treatment. However, it is important to get chest pain checked to rule out more serious conditions.
- Pulmonary embolism: This is a serious condition that occurs when something blocks an artery going into the lungs, resulting in reduced oxygen in the blood. It can cause rib cage pain and other symptoms such as bruising or tenderness of the ribs and difficulty breathing. Anyone experiencing symptoms of a pulmonary embolism should seek medical attention promptly.
- Infection: Certain infections, such as pleurisy, can cause rib cage pain. Pleurisy is an inflammation of the tissue between the lungs and the rib cage.
- Fibromyalgia: This is a chronic condition characterized by widespread pain throughout the body, including the chest. It can cause burning, throbbing, stabbing, or aching pains.
- Fractured rib: A fractured rib is a medical emergency that requires immediate attention. The pain associated with a fractured rib is typically more severe than that of intercostal muscle strain.
- Lung disorders: Conditions such as pneumonia or lung cancer can cause rib cage pain. Lung cancer is a serious condition that may require immediate intervention. However, the initial source of pain from pneumonia can be difficult to pinpoint.
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Frequently asked questions
Intercostal muscles are the muscles that lie within the rib cage. They consist of three layers of muscles: external, internal, and innermost. They combine to fill the space between the ribs and assist in breathing.
An intercostal muscle strain is an injury to the muscles between two or more ribs. Symptoms include sharp pain, stiffness, and difficulty breathing. It is usually caused by overexertion or injury.
If you think you have an intercostal muscle strain, you should consult a doctor. They can diagnose which muscle has been strained and advise on a treatment plan. In the meantime, you can take over-the-counter anti-inflammatories or pain relievers. Applying ice to the affected area can also help reduce inflammation and pain. After 48 hours, you can start applying heat to the area to relax the muscles.
To prevent intercostal muscle strain, be sure to warm up before engaging in sports or exercise. Avoid overdoing activities that your body is not used to.








































