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An intervertebral disc (British English), also spelled intervertebral disk (American English), lies between adjacent vertebrae in the vertebral column.Each disc forms a fibrocartilaginous joint (a symphysis), to allow slight movement of the vertebrae, to act as a ligament to hold the vertebrae together, and to function as a shock absorber for the spine.
The interspinous ligaments (interspinal ligaments) are thin, membranous ligaments that connect adjoining spinous processes of the vertebra in the spine. [1] [2] They take the form of relatively weak sheets of fibrous tissue and are well developed only in the lumbar region. [3] They extend from the root to the apex of each spinous process.
The anterior longitudinal ligament is a ligament that extends across the anterior/ventral aspect of the vertebral bodies and intervertebral discs the spine. It may be partially cut to treat certain abnormal curvatures in the vertebral column , such as kyphosis .
The ligament gradually grows narrower inferiorly. [2] The ligament is thicker in the thoracic than in the cervical and lumbar regions. In the thoracic and lumbar regions, it presents a series of dentations with intervening concave margins. [citation needed] The posterior longitudinal ligament is generally quite wide and thin, [1] and has ...
A ligament is the fibrous connective tissue that connects bones to other bones. It also connects flight feathers to bones, in dinosaurs and birds. All 30,000 species of amniotes (land animals with internal bones) have ligaments. It is also known as articular ligament, articular larua, [1] fibrous ligament, or true ligament.
The ligament consists of three bands: [3] The superior band extends superior-ward from the rib to the above vertebra. [2] [3] The intermediate portion - short and least distinct [2] - extend horizontally from the rib to the IV disc, [2] [3] blending with it. The intermediate band is situated deep to the anterior longitudinal ligament. [3]
Transforaminal ligaments are inconstant ligaments that extend through an intervertebral foramen.They are thought to protect the adjacent spinal nerve and vessels. The ligaments are not widely known and were once considered anomalous; there are no widely accepted criteria for their identification and classification.
The ligamenta flava (sg.: ligamentum flavum, Latin for yellow ligament) are a series of ligaments that connect the ventral parts of the laminae of adjacent vertebrae. They help to preserve upright posture, preventing hyperflexion, and ensuring that the vertebral column straightens after flexion. Hypertrophy can cause spinal stenosis.