Uncovertebral Joints

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Description

Also known as Joints of Luschka, the uncovertbral joints are present from C3 to C7.  The lateral aspect of the vertebral bodies have superior projections know as the uncinate process.  As the intervertbral discs become degenerative, these projections approximate with the body of the next highest vertebra resulting in degenerative joint changes and forming the uncovertbral joints.

Articulating Surfaces

Formed between uncinate processes below, and the uncus above.

Motions Available

They allow for flexion and extension and limit lateral flexion in the cervical spine.

Function

Thought to reinforce the intervertebral disc posterolaterally and therefore provide protection for structures at risk of dic herniation.

Pathology

Osteophytes on the uncinate process resulting from uncovertebral arthrosis may compress both the spinal nerve and the vertebral artery as they pass through the intervertebral and transverse foramina, respectively.

References

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