A hyperelastic bone in the shape of a section of the human spine, 3D printed using an ink developed at Northwestern University. (Credit: Northwestern)

A 3D printable ink produces a synthetic bone implant that rapidly induces bone regeneration and growth. This hyperelastic “bone” material, the shape of which can be easily customized, one day could be especially useful for the treatment of bone defects in children.

The 3D printed biomaterial is a mix of hydroxyapatite (a calcium mineral found naturally in human bone) and a biocompatible, biodegradable polymer that is used in many medical applications, including sutures.

The material is majority hydroxyapatite, yet it is hyperelastic, robust and porous at the nano, micro, and macro levels. The bone biomaterial is 90 percent by weight hydroxyapatite and just 10 percent by weight polymer, and it still maintains its elasticity because of the way its structure is designed and printed. The high concentration of hydroxyapatite creates an environment that induces rapid bone regeneration.

One of the biggest advantages is that the end product can be customized to the patient. Due to its mechanical properties, the biomaterial also can be easily trimmed and cut to size and shape during a procedure.

Source 

Topics:
Materials Medical

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