Ligamentum cruciform atlantis
The ligamentum cruciforme atlantis ( Latin for 'cross-shaped ligament of the first cervical vertebra') is a ligament in the area of the first cervical vertebra ( atlas ). It consists of two parts: the transverse atlantis ligament and the longitudinal fasciculi .
The transversum atlantis ligament ('transverse ligament of the first cervical vertebra') is the main part of the cruciform ligament. It connects the two side parts of the atlas (Massae laterales). The fibers cross in the middle, which is why the tape is wider and thicker there. A layer of cartilage tissue is embedded in the ligament in the area of the median articulatio atlantoaxialis of the second head joint . The cross band has a tensile strength of 350 N and can be overstretched up to 8 mm.
The Fasciculi longitudinales ('longitudinal bundles') connect like a braid with the transverse ligament. The head-side longitudinal bundle ( Fasciculus longitudinalis superior ) is attached in the area of the abdominal edge of the occipital opening . The longitudinal bundle ( Fasciculus longitudinalis inferior ) pulling downwards towards the head pulls towards the back surface of the body of the second cervical vertebra .
literature
- Jutta Hochschild: Understanding structures and functions, functional anatomy: Volume 1: Spine and upper extremity . 4th edition. Georg Thieme, Stuttgart 2014, ISBN 978-3-13-170364-4 , p. 47 .