1. Metal Foams to Regrow Bones
By Justin Womack

2. Bone Damage Possess the ability to self heal
This ability cannot work on injuries that reach the critical size defect
Can be caused by:
Congential Defects
Cancer Resections
Extreme Trauma
Critical Size defect estimated at 2.5 cm in length
Defect greater than 2.5 x bone diameter

3. Bone Tissue Engineering
The goal of bone tissue engineering is to repair, regrow, and restore function to bone tissues damaged beyond the natural healing capacity of the human body without the use of another bone source.
Three main elements needs for Tissue Engineering:
Properly differentiated stem cells
A biocompatible scaffold
Stimulating Factors

4. The Scaffold A bone scaffold must: Provide mechanical support
Provide template for cell attachment
Be Osteoinductive, Osteoconducive, and allow for Osseointegration
Degrade at a similar rate of new tissue formation
Calcium phosphate scaffold
Osteoinduction is the recruitment of immature cells and the stimulation of these cells to develop
Osteoconduvice means that bone grows on a surface.
Osseointegration is the stable anchorage of an implant achieved by direct bonet to implant contact.

5. Metal Foams as a Scaffold Material
Metal foams are a light weight porous metal that retains much of the qualities of the original metal
Has great compressive, impact, and load bearing capabilities
Current applications include lighter automobile parts and material for body armor.

6. Creating the Process

7. Variety of Scaffolds Possible