Which of the following imaging modalities is commonly used to diagnose osteoarthritis?
MRI (Magnetic Resonance Imaging)
CT scan (Computed Tomography)
X-ray (Radiography)
Ultrasound
The Correct Answer is C
X-ray imaging is commonly used to diagnose osteoarthritis. It can visualize joint space narrowing, bone spurs, and other changes associated with the disease.
a. MRI is more commonly used to assess soft tissue structures and is not the first-line imaging modality for osteoarthritis.
b. CT scan is not typically used for diagnosing osteoarthritis due to its higher radiation exposure compared to X-ray.
d. Ultrasound is not commonly used for diagnosing osteoarthritis; it is more useful for soft tissue assessment.
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Correct Answer is B
Explanation
MRI is the most appropriate diagnostic test to confirm the diagnosis of osteoarthritis. It can provide detailed images of the affected joints, allowing the healthcare provider to assess the joint structures, cartilage, and bone for signs of osteoarthritis. Rheumatoid factor (RF) blood test and C-reactive protein (CRP) blood test are used to diagnose inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis. Synovial fluid analysis is usually performed to assess for infection or inflammation in the joint, not to diagnose osteoarthritis.
a. Rheumatoid factor (RF) blood test is used to diagnose inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
c. C-reactive protein (CRP) blood test is used to diagnose inflammatory conditions, but it is not specific to osteoarthritis.
d. Synovial fluid analysis is usually performed to assess for infection or inflammation in the joint, not to diagnose osteoarthritis.
Correct Answer is D
Explanation
Crepitus, a crackling or grating sensation during joint movement, is a common clinical manifestation of osteoarthritis. It occurs due to the irregular surfaces of the joint caused by cartilage degeneration.
a. Warm and swollen joints are characteristic of inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
b. Morning joint stiffness lasting for several hours is typical of inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
c. Red, hot, and tender joints are signs of inflammation and are more commonly seen in inflammatory arthritis conditions, not osteoarthritis.
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