Intercostal muscle

Intercostal muscles are several groups of muscles that run between the ribs and help form and move the chest wall.

The intercostal muscles are a group of muscles located between the ribs in the thoracic (chest) region. They play an important role in the respiratory system by assisting with breathing. There are three layers of intercostal muscles: external intercostals, internal intercostals, and innermost intercostals.

Origin

ribs 1-11.

Insertion

ribs 2-12.

Nerve supply

intercostal nerves.

Action

Elevation or Depression of the Ribs.

The intercostal muscles also provide stability and support to the rib cage, helping to protect the organs in the thoracic cavity. In addition to their role in respiration, they are involved in movements of the trunk, such as bending and rotating.

Clinical Significance

Injury or strain to the intercostal muscles can occur due to trauma, overexertion, or repetitive motion. Symptoms of intercostal muscle strain may include pain or discomfort between the ribs, difficulty breathing, and tenderness or swelling in the affected area.

Treatment typically involves rest, ice or heat therapy, pain medication, and gentle stretching and strengthening exercises. Severe cases may require medical intervention and physical therapy. It’s important to consult with a healthcare professional for an accurate diagnosis and appropriate treatment plan if you suspect an intercostal muscle injury.