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Lateral Cutaneous Branches of Intercostal Nerves (Left)
Nervous System

Lateral Cutaneous Branches of Intercostal Nerves (Left)

Rami cutanei laterales nervi intercostales

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Description

The lateral cutaneous branches of the intercostal nerves arise from the anterior rami of thoracic nerves as they course through the intercostal and subcostal spaces. The lateral cutaneous branches pierce through the thoracic wall to reach the skin. They are collectively sensory nerves that receive information predominantly from the lateral thoracic and abdominal wall. For cutaneous distribution of the spinal nerves, see the dermatome map (Keegan and Garrett, 1948, Foerster, 1933).

The lateral cutaneous branch of the second intercostal nerve is also known as the intercostobrachial nerve. This nerve also receives sensory information from the skin of the medial and posterior arm and forearm.

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References

Foerster, O. (1933) 'The Dermatomes in Man', Brain, 56(1), pp. 1-39.

Keegan, J. J. and Garrett, F. D. (1948) 'The Segmental Distribution of the Cutaneous Nerves in the Limbs of Man', The Anatomical Record, 102(4), pp. 409-437.

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Intercostal Nerve

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Slipping rib syndrome is produced by impingement of an intercostal nerve between two costal cartilages, secondary to the subluxation of an interchondral articulation.

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