Which of the following is a common risk factor for osteoarthritis?
Correct answer: A. Increasing age
- A. Increasing age
- B. A viral infection
- C. Low blood pressure
- D. Excess vitamin D
Explanation
Years of use thin the cartilage and stiffen the joints, so osteoarthritis is commonest after middle age, with obesity and joint injury adding to the risk. It is a wear and tear disease, not an infection.
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The human skeleton provides support, protects organs, enables movement with muscles and stores minerals while bone marrow produces blood cells. Questions cover the axial and appendicular skeleton, types of bones and joints, cartilage, ligaments and tendons, and the difference between fixed, slightly movable and freely movable joints.
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