Arthrosis is characterized by which of the following?

Arthrosis, also known as osteoarthritis, is characterized primarily by degenerative changes within the joint structures, leading to pain and a loss of range of motion. This condition arises due to the gradual breakdown of cartilage, along with other components of the joint, which can cause discomfort during movement and contribute to stiffness, particularly after periods of inactivity.

The term "degenerative changes" reflects the ongoing deterioration of the joint over time, which is often influenced by factors such as age, weight, and previous injury to the joint. The accompanying pain results from the increased friction between the bones due to the thinning cartilage, as well as possible irritation of the surrounding tissues.

While other options might involve aspects related to joint health, they do not accurately describe the specific characteristics of arthrosis. Inflammation in joints typically pertains to conditions like arthritis or rheumatoid arthritis, autoimmune reactions focus on immune system-driven conditions, and the development of bone spurs, while common in arthrosis, is more of a secondary change rather than a defining characteristic of the condition itself. Thus, the defining features of arthrosis include the noted degenerative changes along with associated pain and reduced range of motion.