A client presents with joint pain and stiffness. The healthcare provider performs a physical examination and finds tenderness over the affected joint, as well as crepitus during joint movement. Which of the following diagnostic tests is most appropriate to evaluate the joint for osteoarthritis?
Complete blood count (CBC)
Rheumatoid factor (RF) blood test
X-ray of the joint
Synovial fluid analysis
The Correct Answer is C
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.
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Correct Answer is D
Explanation
X-ray is the most commonly used diagnostic test to confirm the diagnosis of osteoarthritis. It can show joint space narrowing, osteophyte formation (bony overgrowths), and other changes characteristic of osteoarthritis. Rheumatoid factor (RF) and antinuclear antibody (ANA) blood tests are used to diagnose autoimmune conditions like rheumatoid arthritis, not osteoarthritis. Magnetic resonance imaging (MRI) can provide more detailed images of joint structures, but X-ray is typically the initial diagnostic test for osteoarthritis.
a. Rheumatoid factor (RF) blood test is used to diagnose rheumatoid arthritis, not osteoarthritis.
b. Antinuclear antibody (ANA) blood test is used to diagnose autoimmune disorders such as systemic lupus erythematosus (SLE), not osteoarthritis.
c. Magnetic resonance imaging (MRI) can be helpful in assessing joint structures in more detail, but X-ray is the primary diagnostic test for 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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