Gradual worsening pain after repetitive movements.Muscle rigidity when bending or twisting the upper body.Tenderness in the area between the ribs.Stiffness and tension, causing upper back pain.Inflammation, swelling, and sensitivity in the affected area.The signs and symptoms can vary, depending on the severity and cause. This can happen when a lack of conditioning or unhealthy postures weaken muscles.A sudden increase in physical activity that the body is not used to can also lead to intercostal muscle strain.Lifting heavy objects above shoulder height.Repeatedly reaching overhead for work or tasks like cleaning or painting.Over twisting the torso beyond its normal range of motion from lifting weights, sports, yoga postures, or dance positions.Impact trauma from sports or physical activities.Trauma to the rib cage, such as from a fall or automobile collision.CausesĪn intercostal muscle strain often occurs as the result of an injury or overexertion of the muscles. Often radiating pain along the rib cage is experienced that extends to the back. When an intercostal muscle gets twisted, overused, or stretched too far, it can tear, causing muscle strain. The veins, arteries, and nerves lie between the internal and innermost intercostals.These sit directly underneath, run parallel to the internal intercostals, and run from the back of the rib cage to each side.The muscle fibers run perpendicular to the external intercostals, moving diagonally from front to back along the ribs, and are in the entire rib cage.These sit directly underneath the externals and help collapse the chest during breathing to exhale.They are found in the rib cage’s back, sides, and front.The external intercostals originate at the lower edge of a rib and run diagonally to attach to the upper edge of the rib below.
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These are the outermost intercostals, responsible for expanding the chest during breathing to help inhale air and allow full deep breaths.
Each set is located between connected ribs in the upper and mid-back and consists of the following: External There are 11 intercostal muscles on each side of the rib cage. The intercostal muscles have different layers attached to the ribs to help build the chest wall and assist in breathing.
Kenna Vaughn | Master Exercise Physiologist & Health Coach.
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