Trapezoid line

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Trapezoid Line

The Trapezoid Line is a line on the inferior surface of the skull, more specifically on the occipital bone. It is also known as the occipitomastoid suture.

Etymology[edit | edit source]

The term "Trapezoid Line" is derived from the Greek words "trapeza" meaning "table" and "eidos" meaning "form, likeness, appearance". The term "occipitomastoid suture" comes from the Latin "occiput" meaning "back of the skull" and "mastoid" meaning "breast-like", which is a reference to the mastoid process's shape.

Anatomy[edit | edit source]

The Trapezoid Line runs from the mastoid process to the jugular process of the occipital bone. It marks the boundary between the temporal bone and the occipital bone. This line is significant in anatomy as it is used as a landmark for various surgical procedures.

Clinical Significance[edit | edit source]

The Trapezoid Line is used as a landmark in various surgical procedures involving the skull. It is particularly important in surgeries involving the ear, brain, and spinal cord. It is also used in the diagnosis and treatment of conditions such as basilar invagination, Chiari malformation, and craniosynostosis.

Related Terms[edit | edit source]

See Also[edit | edit source]

Trapezoid line Resources
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Contributors: Prab R. Tumpati, MD