What is periarticular sclerosis and lipping?

Periarticular sclerosis and lipping are radiological findings suggestive of osteoarthritis.

- Periarticular sclerosis refers to increased bone density in the affected joint margins. This happens due to increased bone formation in response to the underlying joint inflammation and damage.

- Lipping refers to the formation of osteophytes, which are bony outgrowths, at the edges of the affected joint. This occurs as the body attempts to repair and strengthen the damaged joint, but instead leads to further joint stiffness and pain.

Periarticular sclerosis and lipping are commonly observed in weight-bearing joints such as the knees, hips, and spine, and are associated with age-related degeneration and wear-and-tear of the joints.