The most common form of arthritis is:

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Question: The most common form of arthritis is:

Option a. rheumatoid arthritis
- Rheumatoid arthritis (RA) is a common inflammatory arthritis, but it is not the most prevalent form overall. It occurs in a subset of the population and is characterized by autoimmune inflammation, often affecting joints symmetrically. However, its prevalence is lower than that of osteoarthritis, which affects a larger portion of adults, especially with aging.

Option b. osteoarthritis
- Osteoarthritis (OA) is widely recognized as the most common form of arthritis. It results from wear-and-tear changes in joint cartilage and surrounding tissues, leading to pain, stiffness, and reduced mobility. Its prevalence increases with age and activity, making it the likely correct choice when considering overall frequency in the general population.

Option c. ankylosing spondylitis
- Ankylosing spondylitis is a form of inflammatory arthritis that primarily affects the spine and pelvis. While it is clinically important, it is relatively rare compared to OA and RA. It does not occur as commonly in the general population, which is why it is not identified as the most common form.

Option d. arthrositis
- The term arthrositis is not commonly used in modern medical terminology and may refer to joint inflammation in a general sense. Because it is not a defined, widely recognized classification of arthritis in contemporary practice, relying on this label can be misleading when identifying the most common form. Overall, it does not supersede the well-established prevalence of OA.

Summary perspective:
- When comparing frequency across the population, OA stands out due to its association with aging and degenerative changes in many joints, whereas RA, while important, is less common, and other inflammatory spondyloarthropathies are rarer still. Terminology like arthrositis is not a standard diagnostic category used for prevalence comparisons.

Dashboard End-semester final theory exam

The most common form of arthritis is:

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