Table of Contents
What is the type of joint between vertebra?
The joints of the vertebral arches are plane synovial joints known as the zygapophysial joints, often called facet joints. These joints are formed between the superior and the inferior articular processes (zygapophyses) of adjoining vertebrae.
What type of joint is the intervertebral disc?
cartilaginous joint
Intervertebral discs are made of fibrocartilage and thereby structurally form a symphysis type of cartilaginous joint.
What type of synovial joint is the intervertebral joint?
plane synovial joint
The zygapophyseal joint is structurally classified as a plane synovial joint….
| Type | Intervertebral disc joint: Cartilaginous joint; symphysis Zygapophyseal joint: Synovial plane joint, nonaxial, uniplanar |
|---|---|
| Blood supply | Segmental arteries |
What is the function of the anterior longitudinal ligament?
The anterior longitudinal ligament is a guard against hyperextension of the spine. Rupture may occur if there is sudden forceful hyperextension e.g. ‘whiplash’ injuries.
What is Zygapophyseal joint?
Applied anatomy Zygapophyseal joints are the only synovial joints in the spine, with hyaline cartilage overlying subchondral bone, a synovial membrane and a joint capsule; they comprise the postero-lateral articulation between vertebral levels (Figure 1). The joint space has a potential capacity of 1 to 2 ml.
How many joints are in the vertebrae?
Each vertebra has four facet joints, one pair that connects to the vertebra above (superior facets) and one pair that connects to the vertebra below (inferior facets) (Fig. 6). Figure 6. The superior and inferior facets connect each vertebra together.
What is intervertebral disc?
The vertebral column provides protection to the spinal cord that runs through its central cavity. Between each vertebra is an intervertebral disk. The disks are filled with a gelatinous substance, called the nucleus pulposus, which provides cushioning to the spinal column.
What movement does the anterior longitudinal ligament limit?
Ligaments
| Ligament | Spinal Region | Limits… |
|---|---|---|
| Anterior Longitudinal | Axis – Sacrum | Extension & reinforces front of annulus fibrosis |
| Posterior Longitudinal | Axis – Sacrum | Flexion & reinforces back of annulus fibrosis |
| Ligamentum Flavum | Axis – Sacrum | Flexion |
| Supraspinous | Thoracic & Lumbar | Flexion |
What is the function of the posterior longitudinal ligament?
The posterior longitudinal ligament connects and stabilizes the bones of the spinal column. It runs almost the entire length of the spine, from the 2nd vertebra in the cervical spine (neck) all the way down to the sacrum (end of the spine). The ligament is adjacent to the spinal cord.
Where is the first intervertebral disc?
An intervertebral disc (or intervertebral fibrocartilage) lies between adjacent vertebrae in the vertebral column….
| Intervertebral disc | |
|---|---|
| Part of | Vertebral column |
| System | Musculoskeletal system |
| Function | Fibrocartilaginous joint between spinal vertebrae |
| Identifiers |
What is the intervertebral disc?
Intervertebral Discs. The intervertebral discs (or discs) are fibrocartilages lying between adjacent surfaces of the vertebrae. They form a fibrocartilaginous joint between the vertebral bodies, linking them together.
What can affect the morphology of intervertebral discs?
Other spinal disorders can affect the morphology of intervertebral discs. For example, patients with scoliosis commonly have calcium deposits (ectopic calcification) in the cartilage endplate and sometimes in the disc itself. Herniated discs are also found to have a higher degree of cellular senescence than non-herniated discs.
What are the different methods of intervertebral disc replacement?
The various methods include the replacement of discs with synthetic materials, stem cell therapy, and gene therapy. There is no intervertebral disc between C1 and C2, which is unique in the spine. Two major ligaments support the intervertebral discs.
How do intervertebral discs prevent friction between two moving vertebrae?
The intervertebral discs prevent friction between two moving vertebrae by preventing vertebral bodies from grinding against each other. The intervertebral discs, like other cartilages, have no blood supply. They form the largest structures in the body without their own blood vessels.