What is a zygapophyseal joint anatomy?
What is a zygapophyseal joint 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.
What is another term for zygapophyseal joint?
The joints in the spine are commonly called Facet Joints. Other names for these joints are Zygapophyseal or Apophyseal Joints. Each vertebra has two sets of facet joints. One pair faces upward (superior articular facet) and one downward (inferior articular facet).
What is the meaning of facet joints?
Small joints located between and behind adjacent vertebrae. There are two facet joints at each level of the vertebral column, providing stability to the spinal column while allowing movement. Facet joints are encased with facet joint capsules, which contain fluid that protects and lubricates the joints.
What type of synovial joint is the zygapophyseal facet joint?
The facet joints, (or zygapophysial joints, zygapophyseal, apophyseal, or Z-joints) are a set of synovial, plane joints between the articular processes of two adjacent vertebrae. There are two facet joints in each spinal motion segment and each facet joint is innervated by the recurrent meningeal nerves.
Where is the lumbosacral joint?
The lumbosacral joint is a joint of the body, between the last lumbar vertebra and the first sacral segment of the vertebral column.
What is the function of lumbosacral joint?
The lumbosacral joint is the site of most movements of the lumbar spine. The movements occurring in this joint are mostly flexion and extension, and a minimal degree of lateral flexion.
What Innervates the zygapophyseal joint?
C2–C3 zygapophyseal joint is innervated by the third occipital nerve, which is the superficial medial branch of the dorsal ramus of C3.
What is the joint classification of the Zygapophyseal joints?
The zygapophyseal joint is structurally classified as a plane synovial joint.
What is the facet?
Facets are synovial joints that are lined with cartilage, lubricated in synovial fluid and covered by a joint capsule. Healthy facet joints glide and slide as the back moves, but prevent over-twisting. Figure 1. Side view of the spine shows a normal disc and facet joint (top).
What does zygapophyseal joint mean?
Zygapophysial joint A zygapophysial joint is a synovial joint between the superior articular process of one vertebra and the inferior articular process of the vertebra directly above it. There are two facet joints in each spinal motion segment.
What is Z joint spine?
The facet joints, (or zygapophysial joints, zygapophyseal, apophyseal, or Z-joints) are a set of synovial, plane joints between the articular processes of two adjacent vertebrae. There are two facet joints in each spinal motion segment and each facet joint is innervated by the recurrent meningeal nerves.
What is facet vertebral joint?
Facet joint. A thoracic vertebra. The facet joint is the joint between the inferior articular process (labeled at bottom) and the superior articular process (labeled at top) of the subsequent vertebra. Median sagittal section of two lumbar vertebrae and their ligaments.
