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Human Body & Health

Which outcome causes increased fracture risk when bone adapts to disuse?

A)Elevated osteoclast activity and resorption
B)Increased bone formation rate locally
C)Deposition of calcium to existing tissues
D)Inhibition of osteoblast differentiation entirely

💡 Explanation

Decreased mechanical load inhibits bone density homeostatis, therefore bone undergoes remodeling, which causes increased targeted osteoclast activity and bone resorption, making bone more porous and prone to fracture, rather than stronger formation or less differentiation.

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