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saludos!

I believe these are the correct names for "arthritis of the posterior facets" - they are both much more common than other suggestions offered.

https://www.laserspineinstitute.com/back_problems/facet_synd...

Posterior facet syndrome (facet disease) is a degenerative spine condition that occurs when arthritis develops in the facet joints.

The facet joints are the pivotal joints that connect the vertebrae and allow them to bend and hinge, giving movement to the spine. As arthritis develops in these joints, they become inflamed and stiff, limiting mobility and making each movement painful.

This condition is typically associated with the regular aging process and is frequently experienced later in life as the facet joints deteriorate from years of wear and tear.
Facet joint deterioration

The facet joints are important structures in the spinal column and are responsible for stabilizing the neck and back while allowing for flexion, extension and the ability to pivot and rotate.

These sliding joints have a layer of cartilage over the top and lubricating fluid to allow the vertebrae to rotate in a smooth, comfortable motion. Posterior facet syndrome develops when this cartilage gradually wears away and leads to bone-on-bone contact, causing inflammation and the development of bone spurs around the joint.
Treating osteoarthritis

Initial treatment for posterior facet syndrome is attempted with a variety of nonsurgical, conservative procedures designed to reduce the symptoms of pain and stiffness by removing pressure from the joint. While conservative treatment is often effective for this condition, in some cases, spine surgery is recommended.

Common conservative treatments include:

https://www.laserspineinstitute.com/back_problems/conditions...

Facet disease, also called spinal osteoarthritis, facet arthritis or facet joint syndrome, is degenerative arthritis that affects the facet joints. The facet joints exist in between individual vertebrae, and healthy facet joints allow the spine move smoothly. Facet joints also inhibit certain motions that would injure the important nerve tissue housed inside the spine. Due to our dependence on the facet joints to support almost constant movement and a steady, upright posture, these joints are prone to wear down over time. Any degenerative changes in the facet joints may be considered facet disease.

Patients suffering from facet disease may experience sharp pains in the back during movement or sudden stiffness and difficulty moving the spine. If you have experienced these symptoms regularly, you should consult your physician about determining the cause of your pain and finding a treatment option to relieve your pain and increase your mobility.