Which two types of arthritis are the most commonly identified?

Osteoarthritis and rheumatoid arthritis are the two most commonly identified types of arthritis due to their prevalence and distinct characteristics. Osteoarthritis is a degenerative joint disease that typically results from wear and tear on the joints over time, leading to pain and stiffness. It is prevalent among older adults and is often related to factors such as obesity, age, and joint injuries.

Rheumatoid arthritis, on the other hand, is an autoimmune disorder that causes the body's immune system to attack the joints, leading to inflammation, swelling, and pain. It can occur at any age and is characterized by periods of flare and remission. Together, these two forms encompass a large percentage of arthritis cases, making them significant in understanding the broader landscape of joint health and management strategies involved in fitness and rehabilitation.

While other types, such as gout and psoriatic arthritis, also contribute to the overall picture of arthritis, osteoarthritis and rheumatoid arthritis are recognized as the most prevalent and impactful for a wide range of individuals. Understanding these two types is critical for fitness instructors, as they often encounter clients dealing with these conditions and need to tailor fitness programs accordingly.