Illicium anisatum
Iliocostalis Thoracis is a muscle that is part of the Erector Spinae, the muscle group primarily responsible for keeping the spine erect. It is one of the three muscles that make up the Iliocostalis, alongside the Iliocostalis Cervicis and the Iliocostalis Lumborum.
Anatomy[edit | edit source]
The Iliocostalis Thoracis originates from the upper borders of the angles of the lower six ribs near their junction with the vertebrae, and inserts into the upper borders of the angles of the upper six ribs and the back of the transverse process of the seventh cervical vertebra.
Function[edit | edit source]
The primary function of the Iliocostalis Thoracis is to extend and laterally flex the vertebral column. It also aids in the process of respiration by fixing the point of origin of the diaphragm, which expands the thoracic cavity.
Clinical Significance[edit | edit source]
Due to its role in maintaining posture and movement of the spine, the Iliocostalis Thoracis can be implicated in various back and neck pain conditions. Overuse or strain of this muscle can lead to muscle spasms and pain, often seen in conditions such as myofascial pain syndrome.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD