Answered

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What is the primary reason for a knee making a crunching sound (known as crepitus) when it is bent?
A. The presence of air bubbles in the joint fluid.
B. The grinding of bone against bone due to severe osteoarthritis.
C. The snapping of tendons over the bones.
D. The movement of the kneecap over uneven cartilage surfaces.

Sagot :

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