Facet arthrosis is a degenerative phenomenon that attacks the cartilage aspect of the joints. Although this degeneration is only due to age, it can cause pain in some people. How to treat facet arthrosis? Indeed, osteoarthritis is a very frequent phenomenon in the population, particularly among people over the age of 50. However, it can still begin between the ages of 20 and 30. Men and women are affected in equal proportions.