Which of the following statements about osteoarthritis is correct?
It is an autoimmune disorder.
It is characterized by joint inflammation and swelling.
It commonly affects the distal finger joints.
It primarily involves the synovial joints.
The Correct Answer is C
Osteoarthritis commonly affects the distal finger joints, such as the DIP (distal interphalangeal) and PIP (proximal interphalangeal) joints. This form of osteoarthritis is known as Heberden's and Bouchard's nodes, respectively.
a. Osteoarthritis is not an autoimmune disorder; it is a degenerative joint disease.
b. Unlike rheumatoid arthritis, osteoarthritis is not characterized by joint inflammation and swelling.
d. While osteoarthritis primarily involves synovial joints, it is not limited to these joints.
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Correct Answer is C
Explanation
X-ray of the joint is the most appropriate diagnostic test to evaluate for osteoarthritis. X-ray can show joint space narrowing, osteophyte formation, and changes in bone density, which are typical findings in osteoarthritis. A complete blood count (CBC) and rheumatoid factor (RF) blood test are used to assess for inflammation and autoimmune markers, respectively, which are more indicative of inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis. Synovial fluid analysis is usually performed to assess for infection or inflammation in the joint and may not be as helpful in diagnosing osteoarthritis.
a. A complete blood count (CBC) is used to assess for general health and detect various conditions, but it is not specific to osteoarthritis.
b. A rheumatoid factor (RF) blood test is used to diagnose inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
d. Synovial fluid analysis is usually performed to assess for infection or inflammation in the joint, but it may not provide definitive evidence of osteoarthritis.
Correct Answer is C
Explanation
Lack of physical activity and a sedentary lifestyle are risk factors for osteoarthritis. Regular physical activity helps maintain joint health and reduces the risk of joint degeneration.
a. Female gender is a non-modifiable risk factor for osteoarthritis.
b. Joint injury is a risk factor, especially in individuals with a history of joint trauma or repetitive use injuries. However, the scenario does not mention any joint injury.
d. Age over 60 years is a non-modifiable risk factor for osteoarthritis.
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