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B. A Genetic Discovery May Help Mend Broken Bones

Narrator: This is Science Today. Two genes crucial to fetal bone development have been found to resurface later to help mend broken bones. This discovery may lead to new treatments for hard-to-heal fractures. Dr. Theodore Miclau, a professor of orthopedic surgery at the University of California, San Francisco explains.

Miclau: Somewhere between five and ten percent of all fractures have some difficulty healing and currently people are frustrated even during normal bone healing when it takes longer. What these techniques that might evolve out of this type of research would allow not only bones to heal more reliably but also for us to be able to control better how rapidly they heal.

Narrator: But there's still lots of work to be done.

Miclau: We know that these genes are expressed during bone repair but we don't know how important they are during bone repair and there are several models that we're currently working on to take this to the next level to find out what their significance is in adult bone formation.

Narrator: For Science Today, I'm Larissa Branin.