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
Pain that worsens with weight-bearing activities and improves with rest is a classic clinical manifestation of osteoarthritis. Activity-related pain is due to the increased stress on the affected joint during movement, while rest allows for decreased pressure and relief of pain.
a. Nocturnal joint pain is more typical of inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
b. Morning joint stiffness lasting for 1 hour is characteristic of inflammatory arthritis conditions like rheumatoid arthritis, not osteoarthritis.
d. Joint pain that is constant throughout the day may be seen in various joint disorders, but the pattern of pain relief with activity is more indicative of osteoarthritis.
Correct Answer is C
Explanation
Osteoarthritis is a degenerative joint disease characterized by the gradual breakdown of joint cartilage over time. It is not an autoimmune disease, and it does not involve inflammation like rheumatoid arthritis. While it can affect people of all ages, it is more commonly seen in older adults.
a. Osteoarthritis is not a systemic autoimmune disease. It is primarily a non-inflammatory condition, and the immune system is not involved in its pathogenesis.
b. Osteoarthritis is not a condition that primarily affects young adults. While it can occur at any age, it is more commonly seen in older individuals.
d. Osteoarthritis is not caused by the deposition of urate crystals. Urate crystal deposition is associated with gout, a different form of arthritis.
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