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This editable Main Article is under development and subject to a disclaimer.

[edit intro]

In anatomy, a vertebra is a bone in the spinal column.[1] The zygapophyseal joint (facet joint) is "the joint that occurs between facets of the interior and superior articular processes of adjacent vertebra."[2]

A typical thoracic vertebra, viewed from above.

Sagittal section of a lumbar vertebra.

## Disorders[edit]

Various disorders may lead to lumbalgia (low back pain).

* Spondylosis
* Spondylolysis
* Spondylolisthesis
* Zygapophyseal joint osteoarthritis.

## References[edit]

1. ↑ Anonymous (2022), Vertebra (English). Medical Subject Headings. U.S. National Library of Medicine.
2. ↑ Anonymous (2022), Zygapophyseal Joint (English). Medical Subject Headings. U.S. National Library of Medicine.