Engineering Innovation Podcast and Radio Series

Bone Repair

PostedMarch 22, 2009

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Randy Atkins: Sungho Jin, a University of California engineer, is microscopically modifying the surface of titanium implants used in bone surgery…creating a precise nanostructure that guides the growth of stem cells he places there.

Sungho Jin: The stem cells get stretched and they turn into a specific cell.  In this case, bone cells.

Randy Atkins: No chemical trigger is used.

Sungho Jin: …because we don’t know what these chemicals will do to the human body.

Randy Atkins: And the cells grow quickly.

Sungho Jin: The healing will be at least two to three times faster, and attachment of implant to the growing bone will be stronger.

Randy Atkins: With the National Academy of Engineering, Randy Atkins, 103 point 5 F-M and WTOP-dot-com.


Use in humans is at least a few years away.




  • A news story regarding the technique
  • The Jacobs School of Engineering at UCSD
  • A paper by Jin and colleagues
  • What is a stem cell?