Image-based mechanical simulations improve accuracy in gauging healing progress of bone fractures

When you first break a bone, the body sends out an inflammatory response, and cells begin to form a hematoma around the injured area. Within a week or two, that blood clot is replaced with a soft material called callus that forms a bridge of sorts that holds the fragments together. Over months, the callus hardens into bone, and the healing process is complete. But sometimes, that bridge between the bones fails to form, creating a nonunion.

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